Question
In a knockout football competition 23 teams
participated. What was the least number of matches they needed to play to decide the winner?Solution
Number of team-23 Every team except the winner will be defeated once Since there is no possibility for the teams to be defeated twice, the total number of matches required would be 23-1= 22 Hence, 22 are the correct.

What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
What approximate value will come in place of the question mark (?) in the following question?(Note: You are not expected to calculate the exact value.)<...

45.45 × 11.67 + 14399.88 ÷ 8.01 + 124.79 = ?
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.) 
 (1488.06 × 4.99) - 5677.95 + 1038.06 - 658.97 + (272.95 × 3.05) = ? × (36.95 × 4.02)
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.) 
 39.9% of 1720 + 80.2% of 630 = 89.9% of 1280 + ?