Question

NCERT ARITHEMATIC PROGRESSION....
Ex 5.1

Question 4
11 and 13

Answer 1

hey mate ! (AP)

(xi) No, the given pair of numbers is not in AP

Reason let a be 2

$2 \\ {2}^{2} = 4 \\ {2}^{3} = 8 \\ {2}^{4} = 16 \\ ....$

A1 = 2

A2 = 4

A3 = 8

A4 = 16

A2-A1 = 4-2 = 2

A3-A2 = 8-4 = 4

since, d is not equal

Thus the given set doesn't form A.P.

(xiii)

A2 - A1 = √6 - √3

A3-A2 = √9 - √6

since, d is not equal

Thus the given set doesn't form A.P.

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