Default Title

Question (11)

QN0018252

Which of the following ends with digit 1?

(A) 12²
(B) 19²
(C) 22²
(D) 24²

Correct Answer: B

Explanation:

Numbers ending in 9 have squares ending in 1.

Link:

Report Error

Question (12)

QN0018253

The units digit of 34² is:

(A) 2
(B) 4
(C) 6
(D) 8

Correct Answer: C

Explanation:

4² = 16, so units digit is 6.

Link:

Report Error

Question (13)

QN0018254

If a number ends with 3, its square ends with:

(A) 3
(B) 6
(C) 8
(D) 9

Correct Answer: D

Explanation:

3² = 9.

Link:

Report Error

Question (14)

QN0018255

Which number is not a perfect square?

(A) 121
(B) 144
(C) 169
(D) 175

Correct Answer: D

Explanation:

175 is not the square of any natural number.

Link:

Report Error

Question (15)

QN0018256

The square of 15 is:

(A) 215
(B) 220
(C) 225
(D) 230

Correct Answer: C

Explanation:

15 × 15 = 225.

Link:

Report Error

Question (16)

QN0018257

Which square has 6 in the units place?

(A) 32²
(B) 34²
(C) 35²
(D) 38²

Correct Answer: B

Explanation:

Numbers ending in 4 have squares ending in 6.

Link:

Report Error

Question (17)

QN0018258

If a number has 2 zeros at the end, its square will have:

(A) 2 zeros
(B) 3 zeros
(C) 4 zeros
(D) 5 zeros

Correct Answer: C

Explanation:

Number of trailing zeros doubles on squaring.

Link:

Report Error

Question (18)

QN0018259

Which of the following is true?

(A) Squares can have an odd number of trailing zeros.
(B) Squares can only have an even number of trailing zeros.
(C) Squares never end with zero.
(D) Squares always end with two zeros.

Correct Answer: B

Explanation:

Perfect squares have an even number of trailing zeros.

Link:

Report Error

Question (19)

QN0018260

The square of an odd number is always:

(A) Even
(B) Odd
(C) Prime
(D) Composite

Correct Answer: B

Explanation:

Odd × Odd = Odd.

Link:

Report Error

Question (20)

QN0018261

The square of an even number is always:

(A) Odd
(B) Prime
(C) Even
(D) Composite

Correct Answer: C

Explanation:

Even × Even = Even.

Link:

Report Error

Question (11)

Which of the following ends with digit 1?

Explanation:

Link:

Question (12)

The units digit of 34² is:

Explanation:

Link:

Question (13)

If a number ends with 3, its square ends with:

Explanation:

Link:

Question (14)

Which number is not a perfect square?

Explanation:

Link:

Question (15)

The square of 15 is:

Explanation:

Link:

Question (16)

Which square has 6 in the units place?

Explanation:

Link:

Question (17)

If a number has 2 zeros at the end, its square will have:

Explanation:

Link:

Question (18)

Which of the following is true?

Explanation:

Link:

Question (19)

The square of an odd number is always:

Explanation:

Link:

Question (20)

The square of an even number is always:

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY