Question

यदि 120² – 20² = 25p हो, तो p बराबर है
(A) 16 (B) 140 (C) 560 (D) 14000

Answer 1

:Solution:

120² - 20² = 25p

We can also write it as,

(120 + 20) (120 - 20) = 25p

140 × 100 = 25p

14000 = 25p

p = 14000/25

p = 560

So,

Option C: 560 is the right one value of p.