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If 3 2 = 7, 5 4 = 23, 7 6 = 47, 9 8 = 79 then 10 9 = ?

+4 votes
119,148 views

If

3   2 = 7
5   4 = 23
7   6 = 47
9   8 = 79

Then

10  9 = ??
posted Jun 27, 2015 by anonymous

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19 Answers

–1 vote

3×2+1=7
5×4+3=23
7×6+5=47
9×8+7=79
10×9+9=99
Therefore ,99 can also be correct..........<:.....

answer Mar 9, 2016 by anonymous
since in question last digit is chanched from odd to even and vice versa.. so this pattern should be change in last vertical line also
so it become 8
then 10×9+8=98
–1 vote

3*2 + 1 = 7
5*4 + 3 = 23
7*6 + 5 = 47
9*8 + 7 = 79
10*9 + 8 = 98
11*10 + 9 = 119

Ans :- 98

answer Mar 10, 2016 by Neha Gupta
–1 vote

we will have
10 9 = 99

answer Mar 10, 2016 by Ashutosh Kumar Anand
–1 vote

a b = c

soln = square[a] -2

answer Apr 20, 2016 by Sagar Tanna
–1 vote

98 Following pattern is applicable
(n*m) + m -1 where, n = digit on right
. m = digit on left

answer Apr 24, 2016 by Nirav Savjiyani
–1 vote

ans=10x9+8=98

answer Apr 25, 2016 by Gangadharan Kv
–1 vote

2*3´+1=7
4*5+3=23
6*7+5=47
8*9+7=79
10*9+11=101(By adding prime numbers)

answer Oct 15, 2016 by anonymous
–1 vote

Answer: 99
3 2 = 7 3 + 2^2 +0 =7
5 4 = 23 5 + 4^2 +2 =23
7 6 = 47 7 + 6^2 +4 =47
9 8 = 79 9 + 8^2 +6 =79
10 9 = 99 10+ 9^2 +8 =99

answer Sep 14, 2017 by Mogadala Ramana
Wrong sir ji
why this procedure is wrong , it may be also right , once check my procedure and tell where it is wrong
–1 vote

107 can be answer
If we take 1st digit of next line and multiply with 1st digit of starting line and substract 1st digit of starting line numbers.and if we notice one row is odd and other is even but the question line is opposite of above line.
Eg. 3 2
5 4
7 6
9 8 so next should be
11 10 but in question i.e. 10 9 so we can find answer this way. 4 3
7 6
10 9
13 12

eg. 5*2-3=7
7*4-5=23
9*6-7=47
11*8-9=79
13*9-10=107

answer Sep 25, 2017 by anonymous
Wrong
...