2+3=8,
3+7=27,
4+5=32,
5+8=60,
6+7=60,
7+8=?
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Answer / vishal kacha
that logic...
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
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / gokulraj.g
ways:just multiply the given two digits and add the answer
with the first digit which is to be multiplied by the before
digit.
for example:(2*3)+(2*1)=6+2=8 by this same way
(7*8)+(7*6)=56+42=98
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / ramkumar
2+3=8 (2*3)+2*(1)
3+7=27 (3*7)+2*(3)
4+5=32 (4*5)+2*(6)
5+8=60 (5*8)+2*(10)
6+7=72 (6*7)+2*(15)
7+8=(98) (7*8)+2*(21)
here the logic is in the difference between the numbers
1,3,6,10,15,21
difference is
in between 1 and 3 there is 1 number
in between 3 and 6 there are 2 numbers
in between 6 and 10 there are 3 numbers
in between 10 and 15 there are 4 numbers
in between 15 and 21 there are 5 numbers
***6+7=72 (its 72 not 60)
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / ashfaque ahmed
Since this is a sequence, so we have to observe its first
two terms:
First digit + Second digit = Resultant
2+3=8 means 2*3+2=8
3+7=27 means 3*7+6=27 3*2=6
(The additional term 6 is the product of first digit (3) of
the operational term, i.e. 3+7 and first digit (2) of the
preceding term i.e. 2+3)
4+5=32 means 4*5+12=32 4*3=12
(The additional term 12 is the product of first digit (4) of
the operational term, i.e. 4+5 and first digit (3) of the
preceding term i.e. 3+7)
5+8=60 means 5*8+20=60
6+7=72 means 6*7+30=72 (6*5=30)
(The additional term 30 is the product of first digit (6) of
the operational term, i.e. 6+7 and first digit (5) of the
preceding term i.e. 5+8)
Therefore:
7+8=98 means 7*8+42=98 (7*6=42)
(The additional term 42 is the product of first digit (7) of
the operational term, i.e. 7+8 and first digit (6) of the
preceding term i.e. 6+7)
Hope it is clear now.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / sunil thakker
(2+3)x1+3 = 8
(3+7)x2+7= 27
(4+5)x3+5 = 32
(5+8)x4+8 = 60
(6+9)x5+9 = 84
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / bala seshu
use diz formule guys
a+b=c
(a-1)*a+a*b=c
2+3=8
(1*2)+(2*3)=8........
7+8=?
sol:(7-1)*7+7*8=?
42+56=98
ans:98.....
NOTE:u know what 0.5% members only answered correctly in
CAT exam.
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / xyz
2+3=(5-1)*2=8
3+7=(10-1)*3=27
4+5=(9-1)*4=32
5+8=(13-1)*5=60
6+7=(13-1)*6=72
7+8=(15-1)*7=98
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / hussain
2*1 + 3*2 = 8
3*2 + 7*3 = 27
4*3 + 5*4 = 32
5*4 + 8*5 = 60
6*5 + 9*6 = 84
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / sarath kumar
2+3=8(2+3=5-1=4*2)
3=7=27(3+7=10-1*3)
;
;
;
;
7+8=98(7+8=15-1*7)
ANS=98//
| Is This Answer Correct ? | 0 Yes | 0 No |
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