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Real Numbers

Short Answer Type

41. Find the [HCF ^m LCM] for the numbers 100 and 190.

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42. State fundamental theorem of arithmetic.

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43. Write a rational number between

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44. State Euclid’s division algorithm.

567 Views

45. Consider the number 12ⁿ, where n is a natural number. Check whether there is any value of n ∊ N for which 12ⁿ ends with the digit zero.

705 Views

46. Consider the number 6ⁿ, where n is a natural number. Check whether there is any value of n ∊ N for which 6ⁿ is divisible by 7.

Since 6 = 2 × 3

6ⁿ = 2ⁿ × 3ⁿ

⇒ The prime factorisation of given number 6ⁿ does not contain the prime number 7.

⇒ 6ⁿ is not divisible by 7.

388 Views

47. Given that L.C.M. of (150, 100) = 300, find H.C.F. (150, 100).

319 Views

48. The H.C.F. and L.C.M. of two numbers are 12 and 240 respectively. If one of these numbers is 48; find the other number.

402 Views

49.

What is the HCF of 52 and 130.

440 Views

50. Without actual division find whether the rational number

3 over 3750

is a terminating or a non-terminating repeating decimal.

451 Views

Previous Year Papers

Test Series

Test Yourself

Short Answer Type

46. Consider the number 6n, where n is a natural number. Check whether there is any value of n ∊ N for which 6n is divisible by 7.

46. Consider the number 6ⁿ, where n is a natural number. Check whether there is any value of n ∊ N for which 6ⁿ is divisible by 7.