CHAPTER-1 REAL NUMBER (SET-2)

Questions in this test

1. Find the smallest number which when increased by 17 is exactly divisible by both 520 and 468.
2. A rectangular courtyard is 18m 72cm long and 13m 20cm broad. It is to be paved with square tiles of the same size. Find the least possible number of such tiles.
3. A circular field has a circumference of 360km. Three cyclists start together and can cycle 48, 60 and 72 km a day round the field when will they meet again?
4. Find the list number that is divisible by all the numbers between 1 and 10 $($both inclusive$)$.
5. The exponent of 2 is the prime factorisation of 144, is
6. Sum of exponents of prime factors in prime factorization of 196, is
7. If the LCM of ‘a’ and 18 is 36 and HCF of ‘a’ and 18 is 2, then a = ?
8. $3.\overline{27}$ is ____.
9. If ‘p’ and ‘q’ are co-prime numbers, then $p^2$ and $q^2$are
10. If ‘n’ is any natural number, then $6^n-5^n$ always ends with _______.