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NDA Exam Mathematics Study Material

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Real Numbers

Which of the following is a prime number?

a) 61
b) 16
c) 81
d) 18

✔Answer

Correct Answer Is : 61

Solution Is :

Which of the following is a non-terminating decimal expression?

a) 13/3125
b) 17/8
c) 64/455
d) 29/343

✔Answer

Correct Answer Is : 64/455

Solution Is :

Which of the following is a terminating decimal expression?

a) 129/22 × 57 × 75
b) 6/15
c) 77/210
d) 64/455

✔Answer

Correct Answer Is : 6/15

Solution Is :

The decimal expansion of 7/4 will terminate after how many places of decimals?

a) 1
b) 2
c) 3
d) 4

✔Answer

Correct Answer Is : 3

Solution Is :

Which of the following is not a composite number?

a) 61
b) 16
c) 81
d) 18

✔Answer

Correct Answer Is : 61

Solution Is :

LCM of 18, 20, 14

a) 1270
b) 1260
c) 1720
d) 1062

✔Answer

Correct Answer Is : 1260

Solution Is :

The HCF of 306 and 657 is 9, what is the LCM.

a) 22383
b) 22338
c) 22238
d) 22283

✔Answer

Correct Answer Is : 22338

Solution Is :

Which of the following a non-terminating decimal expression?

a) 129/22 × 57 × 75
b) 15-Jun
c) 77/210
d) 64/455

✔Answer

Correct Answer Is : 64/455

Solution Is :

Which of the following has terminating decimal expression?

a) 13/3125
b) 17/8
c) 64/455
d) 77/210

✔Answer

Correct Answer Is : 13/3125

Solution Is :

The HCF of 12, 15, and 21 is 3 what is the LCM.

a) 120
b) 220
c) 320
d) 420

✔Answer

NDA Exam Mathematics Study Material

Real Numbers

Which of the following is a prime number?

Correct Answer Is : 61

Solution Is :

Which of the following is a non-terminating decimal expression?

Correct Answer Is : 64/455

Solution Is :

Which of the following is a terminating decimal expression?

Correct Answer Is : 6/15

Solution Is :

The decimal expansion of 7/4 will terminate after how many places of decimals?

Correct Answer Is : 3

Solution Is :

Which of the following is not a composite number?

Correct Answer Is : 61

Solution Is :

LCM of 18, 20, 14

Correct Answer Is : 1260

Solution Is :

The HCF of 306 and 657 is 9, what is the LCM.

Correct Answer Is : 22338

Solution Is :

Which of the following a non-terminating decimal expression?

Correct Answer Is : 64/455

Solution Is :

Which of the following has terminating decimal expression?

Correct Answer Is : 13/3125

Solution Is :

The HCF of 12, 15, and 21 is 3 what is the LCM.

Correct Answer Is : 420

Solution Is :

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