1.

If (74)2 is subtracted from the square of a number, the answer so obtained is 5340. What is the number? (a) 98 (b) 102 (c) 104 (d) 110 (e) None of these

Answer»

(c) Let the number be x.
Then,
x2 – (74)2 = 5340
x2 = 5340 + 5476
= 10816
x = 10816 = 104



Discussion

No Comment Found