Selected MCQ

Current Question
Least perfect square divisible by 21, 36 and 56 is ____.
  • A. 3600
  • B. 504
  • C. 441
  • D. 7056
Correct Answer: D
Explanation:
Make prime powers even → 7056.
Related Question 1
A room is 6.24 m long and 4.32 m wide. What is the least number of equal square tiles needed?
  • A. 110
  • B. 124
  • C. 96
  • D. 117
Correct Answer: D
Explanation:
Divide the area using the largest square tile size.
Related Question 2
Total area of 64 squares is 400 cm². Find the side of the big square.
  • A. 17 cm
  • B. 20 cm
  • C. 23 cm
  • D. 26 cm
Correct Answer: D
Explanation:
Total side calculation.
Related Question 3
Two circles have a radius relation. Area of the square is 196 cm². Find radius.
  • A. 12π
  • B. 16π
  • C. 24π
  • D. 32π
Correct Answer: C
Explanation:
Side=14, radius=7×? → area relation.
Related Question 4
A wire bent into a square encloses 484 cm². If reshaped, find a new area.
  • A. 484 cm²
  • B. 538 2/7 cm²
  • C. 616 cm²
  • D. 644 cm²
Correct Answer: C
Explanation:
Perimeter conserved.
Related Question 5
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.