๐Ÿ“Š Math
Q. The average of 18, 24, 30, 36 is:
  • (A) 25
  • (B) 27
  • (C) 28
  • (D) 30
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (B) 27

Explanation: (18 + 24 + 30 + 36) / 4 = 108 / 4 = 27.

๐Ÿ“Š Math
Q. If the cost of 9 pens is โ‚น225, what is the cost of 15 pens?
  • (A) โ‚น350
  • (B) โ‚น360
  • (C) โ‚น375
  • (D) โ‚น400
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) โ‚น375

Explanation: Cost per pen = 225/9 = 25 → 25 × 15 = 375.

๐Ÿ“Š Math
Q. If 25% of a number is 60, what is 40% of the same number?
  • (A) 72
  • (B) 96
  • (C) 100
  • (D) 120
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (B) 96

Explanation: 25% = 60 → full number = 60 / 0.25 = 240 → 40% = 240 × 0.40 = 96.

๐Ÿ“Š Math
Q. What is the value of 64 ÷ 0.4?
  • (A) 120
  • (B) 140
  • (C) 160
  • (D) 180
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) 160

Explanation: 64 ÷ 0.4 = 64 × 10/4 = 640/4 = 160.

๐Ÿ“Š Math
Q. What is the next number in the series: 4, 9, 19, 39, ___?
  • (A) 69
  • (B) 79
  • (C) 89
  • (D) 99
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (B) 79

Explanation: Pattern: ×2 +1 → (4×2+1), (9×2+1), (19×2+1), (39×2+1) → next = 79.

๐Ÿ“Š Math
Q. The HCF of 48 and 64 is:
  • (A) 12
  • (B) 14
  • (C) 16
  • (D) 18
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) 16

Explanation: Greatest common divisor of 48 and 64 is 16.

๐Ÿ“Š Math
Q. How much is 15% of 540?
  • (A) 70
  • (B) 81
  • (C) 90
  • (D) 100
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (B) 81

Explanation: 15% × 540 = (15/100) × 540 = 81.

๐Ÿ“Š Math
Q. What is the square root of 900?
  • (A) 25
  • (B) 28
  • (C) 30
  • (D) 32
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) 30

Explanation: 30 × 30 = 900.

๐Ÿ“Š Math
Q. A person spends โ‚น240 which is 30% of his income. What is the income?
  • (A) โ‚น700
  • (B) โ‚น750
  • (C) โ‚น800
  • (D) โ‚น900
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) โ‚น800

Explanation: 30% = 240 → Income = 240 / 0.30 = 800.

๐Ÿ“Š Math
Q. If x + 25 = 80, what is the value of x?
  • (A) 45
  • (B) 50
  • (C) 55
  • (D) 60
๐Ÿ’ฌ Discuss
โœ… Correct Answer: (C) 55

Explanation: x = 80 - 25 = 55.