Question
When is National Science Day
observed?Solution
• National Science Day is observed every year in India on February 28 to mark a significant discovery by the Indian Physicist Chandrashekhara Venkata Raman in the field of Spectroscopy . • The discovery was later named after him and is known as the ‘ Raman Effect ’.
What value should come in place of the question mark (?) in the following question?
2048 ÷ 16 + 256 × 2 − 180
...What will come in the place of question mark (?) in the given expression?
55% of 1600 – (18 × 50) = ? ÷ 16
Evaluate: 18 ÷ 3 × 4 + 6 − 5
18, 25, 33, 42, 52, 63, ?
√(24 × 5 ÷ ?) × 4 = 56 + 34 – 10
25% of 1600 – 152 = ? × 5
89 ÷ 512 × (1/64) = (23)?
What will come in the place of question mark (?) in the given expression?
? = {1026 ÷ 54 + 17 × 13 – (384 ÷ 24)}
?% of 320 - 69 = 123
520% of 360 – 12% of 400 = ? x 4
