Selected MCQ

Current Question
If the sum of two numbers is 50 and their product is 600, what are the numbers?
  • A. 20 and 30
  • B. 25 and 25
  • C. 10 and 40
  • D. 15 and 35
Correct Answer: A
Explanation:
x² − 50x + 600 = 0 → roots = 20, 30.
Related Question 1
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 2
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 3
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 4
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.
Related Question 5
The product of two numbers is 2028, and their HCF is 13. How many such pairs exist?
  • A. 1
  • B. 2
  • C. 3
  • D. 4
Correct Answer: B
Explanation:
Factorization yields two valid coprime pairs.