Question
Which country has been ranked at the top of the Human
Development Index (HDI) maximum number of times?Solution
Norway has been ranked the highest twelve times, Canada eight times, followed by Japan which has been ranked highest three times. Iceland has been ranked highest twice.
Simplify the following expressions and choose the correct option.
18 * 15 - {3/5 of 250 + 72}
Simplify the given expression.

If 1560 ÷ 30 + 2025 ÷ 45 - z + 33 × 7 = 1848 ÷ 24 × 234 ÷ 39, then the value of z is:
2350 – 4830 + 9570 + 3350 – 1720 = ?
What should come in place of (?) question mark in the given expression.
[60% of 350 + (2/7 of 210)] ÷ 5 = ?
15% of 1800 + 22 = ?Â
- Calculate the value of this expression:
(180 - 90 ÷ 6 of 2) ÷ 5 + 3 of 16 ÷ 4 - 12 of 4 ÷ 8 (7/5) × (3/4) × (5/9) × (6/7) × 3112 = ?
Determine the value of 'p' in following expression:
720 ÷ 9 + 640 ÷ 16 - p = √121 X 5 + 6²- 7