**Brain Twister Puzzle Solution - 28 july**

2+3=8,

3+7=27,

4+5=32,

5+8=60,

6+7=72,

7+8=??

Solve it?

**For Solution :**Click Here

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2+3=8,

3+7=27,

4+5=32,

5+8=60,

6+7=72,

7+8=??

Solve it?

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(a*(a+b))-a

ReplyDeleteYour are the real genius.

DeleteIt's "You're the real genius"

Deletewow but try to solve 84*[2+2+2]!.

Deleteans is 98

Delete105

Delete98

Delete98

Deletein other way it can be solved as a*(b+(a-1))

Delete98

DeleteThis comment has been removed by the author.

Delete(a-1)(a+b)+b

Delete(a * b) + (a * (a-1))

Delete(7 * 8) + (7 * 6) = 98

its 98

Delete2*(3+1)=8

3*(7+2)=27

4*(5+3)=32

5*(8+4)=60

6*(7+5)=72

7*(8+6)=98

2*1+(2*3)=8

Delete3*2+(3*7)=21

4*3+(4*5)=32

5*4+(8*5)=60

6*5+(7*6)=72

7*6+(8*7)=98

(2*3)+2=8

Delete(3*7)+6=27 (:6-2=4)

(4*5)+12=32 (:12-6=6)

(5*8)+20=60 (:20-12=8)

(6*7)+30=72 (:30-20=10)

(7*8)+42=98 (:42-30=12)

Siddaram S I

Delete2*3=6(+2=0+2)

3*7=21(+6=2+4)

4*5=20(+12=6+6)

5*8=40(+20=12+8)

6*7=42(+30=20+10)

7*8=56(+42=30+12)

∑ c(n-1)+d(n) - (∑ c(n-1)+d(n) - ∑ a(n-1)+b(n)) = u

Deleten = 2 n = 3

2(1) + 3(2) = 8 = u

3(2) + 7(3) = 27

4(3) + 5(4) = 32

5(4) + 8(5) = 60

6(5) + 7(6) = 72

7(6) + 8(7) = 98

Steve Jobs

DeleteThought exactly like that, although without this part:

"∑ c(n-1)+d(n) - (∑ c(n-1)+d(n) - ∑ a(n-1)+b(n)) = u

n = 2 n = 3"

... I'm just inthe 9th grade (from Portugal).

Its 98

DeleteAdd both numbers

then multiply the result with first number

and then subtract the first number with the result

therefore: 7+8 = 15

then 15 X 7 = 105

then 105 - 7 = 98

Answer is 98.. this is how we get:

Delete[2]+3=8............... 2*3+2 (2 is the initial product)

[3]+7=27............. 3*7+6 (2*3)

[4]+5=32............. 4*5+12 (4*3)

[5]+8=60............. 5*8+20 (5*4)

[6]+7=32............. 6*7+30 (6*5)

[7]+8=32............. 7*8+42 (7*6)

Rule: Multiply both numbers and add a [NUMBER]

this Number is found by multiplying the first number of the row with the previews number respectively, shown in square brackets.

(2*1) + (3*2) = 8

Delete(3*2) + (7*3) = 27

(4*3) + (5*4) = 32

(5*4) + (8*5) = 60

(6*5) + (7*6) = 72

(7*6) + (8*7) = 98

So the answer is 98

such genius

Delete98

Delete98??

ReplyDeleteyes < because 9de-shift0

Delete@89#=!0+*<

#89&=@0+@&<

$89%=#0+#@<

%89*=$0+^)<

^89&=%0+&@<

&89*=^0+(*>

98

DeleteA*b + a*(a-1)

ReplyDeleteOr

A*(a+b-1)

Or

A*a + a*b -a

2*(3+1)=4

ReplyDelete3*(7+2)=27,

4*(5+3)=32,

5*(8+4)=60,

6*(7+5)=72,

7*(8+6)=98

nice

Deletewell done yar

Deletesuper..

Deletesuper

DeleteNice!!

Delete98

ReplyDelete2*(3+1)=4

Delete3*(7+2)=27,

4*(5+3)=32,

5*(8+4)=60,

6*(7+5)=72,

7*(8+6)=98

a+b=c

ReplyDeletec/a=d

d=a+b-1

7+8=15;15-1=14;14*7=98

7+8=98

ans is 98...

ReplyDelete(2*3)+2 = 8

(3*7)+6 = 27

(4*5)+12 = 32

5*8 + 20 = 60

6*7 + 30 = 72

7*8 + 42 = 98

I still did not get it!

Delete:(

98

ReplyDelete43046721

Delete2+3=5

ReplyDelete5*2=10

10-2=8

3+7=10

10*3=30

30-3=27

similarly

7+8=15

15*7=105

105-7=98

A+B=C

ReplyDeleteD+E=F

Rule: F = ((D+E)*A) + E

Thus, ans is 98.

-Manoranjan

98

ReplyDeletesuper

Deletenice

ReplyDeleteby sowmya

Wrong the answer is 98 try to analyze the problem.... you will still get the correct answer.....

ReplyDelete98

ReplyDelete98

ReplyDelete(2*3)+(2*1)=8

ReplyDelete(3*7)+(3*2)=27

(4*5)+(4*3)=32

(5*8)+(5*4)=60

(6*7)+(6*5)=72

(7*8)+(7*6)=98

gud keep it up

Deletea-3=45*9/9-9+102=a

ReplyDeletea*2=a

a*a=3

8*8=64a+a=3

3*3=9+a=a

this is the awnser 4 sure cause i know alot about math i know it all for this math problem for the harest and easyest cause this is a*a=3 then8*8=64cause if you add subtract divide multiply you get the problem and awnser ther is the awnser to the math problem this is realy easy because it is all in your bloode and brain i have the right awnser.......Thank you for reading this

= (b+o) * a where

ReplyDeleteb = 2nd number

o = order that the equation appears in or (a-1)

a = first number

answer = 98.

O thanks!

Delete1*a+2*b

ReplyDelete2*a+3*b

3*a+4*b

4*a+5*b

and so on.......

1*(2+3)+3=8

ReplyDelete2*(2+7)+7=27

3*(2+5)+5=32

4*(2+8)+8=60

5*(2+7)+7=72

6*(2+8)+8=98

Super..........

ReplyDeletefantastic

ReplyDeleteI LIKED IT

ReplyDeletea(a+b-1)

ReplyDelete2(2+3-1)=8

3(3+7-1)=27

4(4+5-1)=32

5(5+8-1)=60

6(6+7-1)=72

7(7+8-1)=98

2*1 + 3*2 = 8

ReplyDelete3*2 + 7*3 = 27

4*3 + 5*4 = 32

5*4 + 8*5 = 60

6*5 + 7*6 = 72

7*6 + 8*7 = 98

98

ReplyDeleteAnswer is : 98

ReplyDeleteExplanation:

Here, 2+3=2*(3+1)= 8

3+7=3*(7+2)= 27,

4+5=4*(5+3)= 32,

5+8=5*(8+4)= 60,

6+7= 6*(7+5)= 72,

Therefore,

7+8= 7*(8+6)=98

2*1+3*2=8

ReplyDelete3*2+7*3=27

4*3+5*4=32

5*4+8*5=60

6*5+7*6=72

7*6+8*7=98

98

ReplyDeleteselvakumar (a+b)-1*a

ReplyDeleteits 98

ReplyDeletethe answer is 98

ReplyDeletethe formula is :

(a+b)(a-1)+b

simplified to :

a(a+b-1)

I enjoyed it!

nice question i got the answer 98

ReplyDeletex * (x + y - 1), so 98

ReplyDelete98

ReplyDelete98.

ReplyDeleteThis should have been rated as an easy puzzle.

98

ReplyDelete98

ReplyDelete98

ReplyDelete2+3=8,

ReplyDelete3+7=27,

4+5=32,

5+8=60,

6+7=72,

7+8=??

(2+3)*2- 2=8

(3+7)*3-3=27

(5+8)*5-5=60

(7+8)*7-7=98

2+3=8,

ReplyDelete3+7=27,

4+5=32,

5+8=60,

6+7=72,

7+8=??

(2+3)*2- 2=8

(3+7)*3-3=27

(5+8)*5-5=60

(7+8)*7-7=98

98

ReplyDeletethe solution is,

a*(a+b-1)

example-

if 7=a

and 8=b

then solution is

7*(7+8-1) = 7*14 = 98

98

ReplyDelete2*3+2

3*7+6

4*5+12

5*8+20

6*7+30

7*8+42

This comment has been removed by the author.

ReplyDeleteoh

Delete98 is right answer for without any formula we can think logically

ReplyDeleteans is 106

ReplyDeleten(a)+m(b);n=1,2,3,4,5,6

;m=2,3,4,5,6,7

98

ReplyDelete98

ReplyDelete98

ReplyDeleteAnswers : 98

ReplyDelete2+3=5-1=4*2=8

3+7=10-1=9*3=27

4+5=9-1=8*4=32

5+8=13-1=12*5=60

6+7=13-1=12*6=72

7+8=15-1=14*7=98

Sunil kumar

98

ReplyDelete98

ReplyDelete((a-1)*(a+b))+b

ReplyDelete(a*a)+((a*b)-a)

ReplyDeleteAns=98

ReplyDeleteANS:98

ReplyDeleteAns: 98

ReplyDeleteA*B + A * (A-1)

ans.98

ReplyDeleteb+a*a-a

8+7*7-7

15*7-7

105-7

98

Ans : 98

ReplyDeleteLogic:

2*(3+1)=8

3*(7+2)=27

4*(5+3)=32

5*(8+4)=60

6*(7+5)=72

7*(8+6)=98

The ans is 98

ReplyDeleteit's wrong

ReplyDelete98

ReplyDeleteone more solution :

ReplyDelete2*3+(2)=8

7*3+(2+4)=27

4*5+(2+4+6)=32

5*8+(2+4+6+8)=60

6*7+(2+4+6+8+10)=72

7*8+(2+4+6+8+10+12)=108

Ans: 108

x+y = x*y + x(x-1)

ReplyDeleteso

7+8 => 56 + 42 => 98

(ab)+(a(a-1))=R

ReplyDeleteThough I don't feel any accomplishement for finding an answer in less than 10 mins. Random pattern finding is what solves these type of problems.

62

ReplyDelete98, (a+b)*n+b , where n is the sequence no of equation.

ReplyDeleteIts 98

ReplyDelete2 + 3 = 8 : 2* (2+3-1)

ReplyDelete3 + 7 = 27 : 3* (3+7-1)

.

.

7+ 8 = 98 : 7*(7+8-1)

2*(3+1)=8

ReplyDelete3*(7+2)=27

.

.

.

7+(8+6)=??? = 98

98

ReplyDeletea*b+(a-1)*a....

ReplyDelete98 that's quite simple

ReplyDeletea(a+b)-a,answer98

ReplyDelete{(a*b)+i*a},where i=1,2,3....

ReplyDelete98

ReplyDelete98

ReplyDeletebcoz

2+3=2*[3+(2-1)=8

3+7=3*[7+(3-1)=27

4+5=4*[5+(4-1)=32

5+8=5*[8+(5-1)=60

6+7=6*[7+(6-1)=72

Therefore

7+8=7*[8+(7-1)]=98

x+y=x[y+(x-1)=x^2+xy-x

since when 2+3=8? this is a wrong equality from the very beginning and against all math theories. 2+3=5 and therefore 7+8=15

ReplyDeletethis is the answer.. :)

2 * 3 + 2 =8

ReplyDelete3 * 7 + 6 =27,

4 * 5 + 12 =32,

5 * 8 + 20 =60,

6 * 7 + 30 =72,

7 * 8 + 42 = 98

you guys are smart..

ReplyDeleteThere are lots of solutions to this. One set is of the form:

ReplyDeletef(x,y)=(1-n)x^2-2ny^2+(3n+1)xy-(12n+1)x+13ny+11n

where n=0,1,2,3,...

if n=0 then f(x,y)=x^2+xy-x which produces f(7,8)=98

if n=1 then f(x,y)=-2y^2+4xy-13x+13y+11 so f(7,8)=120

continue to get 142,164, 186,....

98

ReplyDeletethis is the way i solved it.....

ReplyDeletefirst i try to find the common pattern

2,3=8 (8/2=4) and 2+3 =5 that means 4,5

3,7=27 9,10

4,5=32 8,9

5,8=60 12,13

6,7=72 12,13

7,8 =98 14,15 in this case i first find 7+8 =15,,and 15-1=14,,,,then 14*7......98......

Poor notation ... any maths teacher writing 2+3=8 should be flayed alive. '+' has a well-defined meaning, it means 'add'. That is not what you are doing here, so you must not use '+'.

ReplyDeleteYou could either write it as 2*3=8 (although in type, you have to make it clear that that is not a multiplication sign), or more correctly f(2,3)=8.

Simplest formula:

ReplyDeletea(a+b-1)

7*(7+8-1) = 98

as per my logic..the second number has been added with 1 and multiplied with previous one ....similarly in second case second no is added with 2 and multiplied with first one...so on...so the answer is 53 ...it too works

ReplyDeletesorry sory..its 98..7*(8+6)

Delete98

ReplyDeleteI got it and I'm in 5th grade

lol

DeleteI actually did this a different way. (Perhaps it is algebraically equivalent, but my homework is more important than proving this).

ReplyDeleteIf you multiply each set of two numbers together, and subtract their answers, they form a sequence, in which the next term is 98.

The sequence is:

2,6,12,20,30, T

Note that each time the difference increases by 2, from 4 to 6, to 8 and so on.

This implies that the difference between 30 and t should be 12 and that T = 42. If we add T to the product of 7 and 8 (56) we end up with 98, as per the solution.

I thought that was fun, anyway.

L.

(a-1)*a+a*b:

ReplyDelete(2-1)*2+2*3 = 8

(3-1)*3+3*7 = 27

(4-1)*4+4*5 = 32

(5-1)*5+5*8 = 60

(6-1)*6+6*7 = 72

(7-1)*7+7*8 = 98

The logic used is, a+(a+1)=(a*(a+1))+a(a-1). Therefore the answer is 98

ReplyDeleteIt will solve by this Eqn

ReplyDeletea²+ab-b

a= 1st term

b= 2nd term

It will solve by this Eqn

ReplyDeletea²+ab-b

a= 1st term

b= 2nd term

It's 98. Did a cheating and solved using genetic programming. :)

ReplyDeleteAns = (x + y -1) * x

98

ReplyDelete(6*7) + (7*8) = 42 + 56 = 98

ReplyDeleteIt's 98

ReplyDeleteGood question for IQ test

ReplyDeleteGood question for IQ test

ReplyDeleteIt's 98

ReplyDeleteSO MANY COMMENTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

ReplyDelete((2+3)*1)+3=8

ReplyDelete((3+7)*2)+7=27

((4+5)*3)+5=32

((5+8)*4)+8=60

((6+7)*5)+7=72

((7+8)*6)+8=98