81.LCM of 8 and 12 = ?
Ans:24
82.HCF of 24 and 36 = ?
Ans:12
83.HCF of 18 and 27 = ?
Ans:9
84.LCM of 5 and 7 = ?
Ans:35
85.Sum of the first 10 natural numbers = ?
Ans:55
86.Product of 12 and 12 = ?
Ans:144
87.20% of 20% of 500 = ?
Ans:20
88.If a = 5 and b = 3, then a² - b² = ?
Ans:16
89.30 ÷ 0.5 = ?
Ans:60
90.0.2 × 0.3 = ?
Ans:0.06
91.1000 - 456 = ?
Ans:544
92.45 × 0 + 7 = ?
Ans:7
93.8² + 6² = ?
Ans:100
94.The next prime number after 13 is.
Ans:17
95.The smallest two-digit prime number is.
Ans:11
96.12 × 8 = ?
Ans:96
97.144 is the square of which number?
Ans:12
98.7 × 6 - 2 = ?
Ans:40
99.50% of 50% of 400 = ?
Ans:100
100.9 × 9 - 1 = ?
Ans:80