[PP Sub Inspector 17 Aug 2021]
6. The HCF of 2200 and 1450 is:
60
15
64
50
7. If the sum of two numbers is 40, and the HCF and LCM of these numbers are 8 and 48, respectively, then find the sum of the reciprocals of the numbers.
\(5 \over 48\)
\(7 \over 48\)
\(5 \over 24\)
\(7 \over 24\)
8. On dividing 2121 as well as 624 by a 3 digit number N, we get the same remainder. What is the sum of the digits of N?
28
24
22
11
9. Find the value of '?' in the following equation.
\(\left ({4 \over 3} + {5 \over 9}\right) of {4 \over 17} ÷ 2{1 \over 3} \times 1{1 \over 4} - {1 \over 21}= ?\)
\(4 \over 21\)
\(3 \over 17\)
\(21 \over 4\)
\(2 \over 15\)
10. If x2 + 11x + 30 = 0, find the possible values of x ?
x = -5, -5
x = -6, -5
x = -6, -6
x = 6, 5