1. If A = 2n + 13, B = n + 7 where n is a natural number then HCF of A and B
2. (-1)n + (-1)8n = 0 when n is
3. If the LCM of 12 and 42 is 10 m + 4 then the value of m is
4. The decimal expansion of the rational number \(\frac{6243}{2^2×5^4}\)will terminate after
5. n² - 1 is divisible by 8, if n is
6. If n is a natural number, then exactly one of numbers n, n + 2 and n + 1 must be a multiple of
7. The rational number between 72 and 73 is
8. If a and 6 are two positive numbers and H and L are their HCF and LCM respectively. Then
9. LCM of 2³ × 3² and 2² × 3³ is
10. The LCM of 2.5, 0.5 and 0.175 is