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1. Real Numbers
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Q24 of 124 Page 1

The product of any three consecutive natural numbers is divisible by 6 (True/False).

True

Since n(n + 1)(n + 2) is divisible by 2 and 3, then it is divisible by 6.


Example: Let us take three consecutive numbers 10, 11, 12.


Product = 10 × 11 × 12 = 1320


∴ 1320 is divisible by 6.


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22

π is an irrational number (True/False).

23

The sum of two prime numbers is always a prime number (True/False).

25

Every even integer is of the form 2m, where m is an integer (True/False).

26

Every odd integer is of the form 2m - 1, where m is an integer (True/False).

Questions · 124
1. Real Numbers
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