Question

If 43 = 158; 35 = 824; 42 = 153 ; then 32 = ?

• A. 84
• B. 83
• C. 85
• D. 94

Answer 1

The correct option is B 83

he rule is : ab=a2−1.b2−1ab=a2−1.b2−1
43=42−1.32−1=158;43=42−1.32−1=158;
35=32−1.52−1=82435=32−1.52−1=824
42=42−1.22−1=15342=42−1.22−1=153
∴∴32=32−1.22−1=83