DELHI POLICE MATHS QUIZ

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Question 1:

To find the HCF of two numbers, the quotients are 2, 3 and 5 respectively. If the last divisor is 45, then what will be the smaller number?

Question 2:

Which of the following set of fractions is in ascending order ?

Question 3:

What is the nearest number to 75070 which is divisible by 65?

Question 4:

How many composite numbers are there from 53 to 97 ?

Question 5:

A and B are two prime numbers such that A > B and their LCM is 209. The value of A$^2$-B is:

Question 6:

The expression $\frac{1}{3 \times 4}+\frac{1}{4 \times 5}+\frac{1}{5 \times 6}$ +............+$\frac{ 1}{20 \times 21}$ , what result will be obtained by simplifying ?

Question 7:

How many such numbers are there from 500 to 650 (inclusive of both) which are not divisible by both 3 and 7?

Question 8:

What is the least multiple of 7, which when divided by 6, 9, 12 and 15 leaves a remainder 3 in each case?


Question 9:

Let $x=(433)^{24}-(377)^{38}+(166)^{54}$. What is the units digit of $x$ ?

Question 10:

If a nine-digit number $789 x 6378 y$ is divisible by 72 , then the value of $x + y$ is: