# Square and Cube roots

1. √? +22=

(a)

(b)

(c)

(d) 22

(e) None of these

Explanation:

√?=

?=

2.

(a)

(b)

(c)

(d) 50

(e) None of these

Explanation:

–> 39+11=50

3.  +7820=9206-206-1100

(a) 9604

(b) 8281

(c) 6400

(d) 8100

(e) 640

Explanation:

4.

(a) 45980

(b) 44890

(c) 43780

(d) 42670

(e) None of these

Explanation:

5.

(a) 2601

(b) 2804

(c) 2409

(d) 2206

(e) None of these

Explanation:

52×52=2704

6. Which one of the following statements is true?

(a) =

(b)

(c)

(d) Cannot be determined

(e) None of these

Explanation:

7. Among the given numbers the one which is not a perfect square is:

(a) 1936

(b) 2452

(c) 1369

(d) 6561

(e) None of these

Explanation:

8. The square root 0f 1585081 is:

(a) 1259

(b) 2159

(c) 1251

(d) 1291

(e) 1921

Explanation:

Here, 081 is the Perfect square of 9.

As one’s place of remaining number is 5.

So, square root is also 5.

158 is lying between the perfect squares of 12 and 13.So , we can take lowest.

So, the square root should be 1259.

9. The square root of a positive number less than 100 lies between:

(a)0 and 1000

(b)0 and 10

(c)-10 and 10

(d)-100 and 100

(e)100

Explanation:

Square root of 100 is 10.

So the square root of less than 100 lies between 0 to 10.

10. Which one of the following is the least?

(a)

(b)

(c)

(d)

(e) None of these