Selected MCQ

Current Question
If the difference of two numbers is 12 and their product is 180, the numbers are ____.
  • A. 6 and 30
  • B. 10 and 18
  • C. 12 and 15
  • D. 9 and 20
Correct Answer: B
Explanation:
Solve x² − 12x − 180 = 0 → roots = 18 and 10.
Related Question 1
Sum of two numbers is 25, and the difference is 13. Find product.
  • A. 104
  • B. 114
  • C. 315
  • D. 325
Correct Answer: B
Explanation:
Solve simultaneous equations.
Related Question 2
Three numbers are co-prime. The product of the first two is 551. Find the third.
  • A. 75
  • B. 81
  • C. 85
  • D. 89
Correct Answer: C
Explanation:
Factorization approach.
Related Question 3
Four prime numbers in ascending order have the smallest difference. Find the smallest.
  • A. 5
  • B. 7
  • C. 11
  • D. 13
Correct Answer: A
Explanation:
The closest primes start at 5.
Related Question 4
Sum of squares of two consecutive integers exceeds product by 91. Find numbeRs.
  • A. 9,10
  • B. 10,11
  • C. 11,12
  • D. 12,13
Correct Answer: A
Explanation:
Form Equation and solve.
Related Question 5
The product of two numbers is 4107, and their HCF is 37. Find their LCM.
  • A. 101
  • B. 107
  • C. 111
  • D. 185
Correct Answer: C
Explanation:
LCM = 4107/37 = 111.