Question

UNIT-2 Real Numbers one mark questions 1)​

Answer 1

Answer:

1

Step-by-step explanation:

HCF of 8, 9, 25 is

(a) 8

(b) 9

(c) 25

(d) 1

Answer: d

Answer 2

answer:

Question 1.

The decimal expansion of the rational number 432453 will terminate after how many places of decimals? (2013)

Solution:

Question 2.

Write the decimal form of 129275775

Solution:

Non-terminating non-repeating.

Question 3.

Find the largest number that will divide 398, 436 and 542 leaving remainders 7, 11, and 15 respectively.

Solution:

Algorithm

398 – 7 = 391, 436 – 11 = 425, 542 – 15 = 527

HCF of 391, 425, 527 = 17

Question 4.

Express 98 as a product of its primes.

Solution:

2 × 72

Question 5.

If the HCF of 408 and 1032 is expressible in the form 1032 × 2 + 408 × p, then find the value of p.

Solution:

HCF of 408 and 1032 is 24.

1032 × 2 + 408 × (p) = 24

408p = 24 – 2064

p = -5

Step-by-step explanation:

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