1.

1). 13692). 3613). 2894). 441

Answer»

The pattern of the original number series is

⇒ 22 = 4,

⇒ 32 = 9,

⇒ 52 = 25,

⇒ 72 = 49,

112 = 121,

⇒ 132 = 169,

Notice 2, 3, 5, 7, 11 & 13 are prime numbers.

According the pattern of the above series the number series starting from the given number 17 would be as:

⇒ 172 = 289,

⇒ A = 192 = 361

⇒ B = 232 = 529

⇒ C = 292 = 841

⇒ D = 312 = 961

⇒ E = 372 = 1369

Notice 17, 19, 23, 29, 31 & 37 are prime numbers.

∴ The REQUIRED number in place of A would be 361



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