Question
Which among the following is not a prime number?
This question was previously asked in
UPSSSC PET 2025 Question Paper (07-Sep-2025) (Shift-2)
The correct answer is
57
Among the options: 29 prime, 47 prime, 53 prime, 57 = 3 × 19 is NOT prime. Hence 57 is the answer.
Was this answer helpful?
Similar Questions
- A fraction becomes $\frac{1}{3}$ when $1$ is subtracted from the numerator and it becomes $\frac{1}{4}$ when $8$ is added to its denominator. The fraction is
- The square of Meena's age is $9$ more than $8$ times her age. What is her age?
- If $3x-14 = 4$ then $x =$
The product of 2 numbers is 1530 and their HCF is 15, then their LCM is
What comes in place of question mark (?) in the following number series ?
4, 12, 36, 108, 324, ?If you subtract $\frac{1}{2}$ from a number and multiply the result by $\frac{1}{2}$, you get $\frac{1}{8}$. The number is
Which is greater: √45 or √49 - 1?
- If x and y are co-primes, then their LCM is
- The difference between the largest 3 digit number and smallest 2 digit number is
Replace the question mark (?) in the following number series with suitable option.
$3, 3, 4.5, 9, 22.5, ?$
Important Questions from Number System (Notes)
- Which number system uses only digits 0 and 1?
- The sum of the digits of a 2-digit number is 12. When the digits of the number are interchanged, the number becomes 15 more than twice the original number. The original number is:
- What is the least number which, when divided by 7, 12 and 15 leaves 1 as the remainder in each case?
- On dividing a number by 5, 7 and 8 successively, the remainders are 2, 3 and 4 respectively. The number from the following options can be -
- Three-digit numbers are formed of the form "abc" where all the digits a, b and c are different and b = a + c. Total number of such possible three-digit numbers is
Need Expert Advice?
Upcoming Exams
SSC Selection Post
September 16, 2026
Test Series
State Exams
UPSSSC PET 2025 Mock Test Series (250+ Tests)
420 Tests 23 Tests Free
9541 Attempts
4.3(150)
English, Hindi
More Questions from UPSSSC PET
