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Q1
:
If (64)
2
- (36)
2
= 20 x
x
, then
x
= ?
A
None of these
B
70
C
140
D
120
E
180
Solution
ANS:
D
- 140
20 x
x
= (64 + 36)(64 - 36) = 100 x 28
x
=
100 x 28
= 140
20
Share :
x =
