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On a morning walk, three persons step off together and their steps measure 40 cm, 42 cm and 45 cm, respectively. What is the minimum distance each should walk so that each can cover the same distance in complete steps?

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(A) 2520cm (B) 2525cm (C) 2555cm (D) 2528cm

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Class 10 Maths 3 years 1 Answer 15 views Enlightened 0

The H.C.F of 441, 567 and 693 is

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(A) 1 (B) 441 (C) 126 (D) 63

Class 10 Maths 3 years 0 Answers 17 views Enlightened 0

If n is a rational number, then 52n − 22n is divisible by

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(A) 3 (B) 7 (C) Both 3 and 7 (D) None of these

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Class 10 Maths 3 years 1 Answer 91 views Enlightened 0

The least number that is divisible by all the numbers from 1 to 10 (both inclusive) is

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Class 10 Maths 3 years 1 Answer 4 views Enlightened 0

A rational number in its decimal expansion is 327.7081. What would be the prime factors of q when the number is expressed in the p/q form?

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(A) 2 and 3 (B) 3 and 5 (C) 2, 3 and 5 (D) 2 and 5

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Class 10 Maths 3 years 1 Answer 21 views Enlightened 0

The values of the remainder r, when a positive integer a is divided by 3 are:

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(A) 0, 1, 2, 3 (B) 0, 1 (C) 0, 1, 2 (D) 2, 3, 4

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Class 10 Maths 3 years 1 Answer 20 views Enlightened 0

.If two positive integers p and q can be expressed as p = ab2 and q = a3b; a, b being prime numbers, then LCM (p, q) is

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(a) ab (b) a2b2 (c) a3b2 (d) a3b3

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Class 10 Maths 3 years 1 Answer 36 views Enlightened 0

The largest number which divides 70 and 125, leaving remainders 5 and 8, respectively, is

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(a) 13 (b) 65 (c) 875 (d) 1750

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Class 10 Maths 3 years 1 Answer 8 views Enlightened 0

If the HCF of 65 and 117 is expressible in the form 65 m – 117, then the value of m is:

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

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Class 10 Maths 3 years 1 Answer 8 views Enlightened 0

The product of a non-zero number and an irrational number is:

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(a) always irrational (b) always rational (c) rational or irrational (d) one

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Class 10 Maths 3 years 1 Answer 11 views Enlightened 0

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