Multiple choice

How many times the hands of a clock are in a straight line, but in opposite direction for six and half days?

  1. 134

  2. 143

  3. 153

  4. 164

  5. 138

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The hands of a clock are in a straight line in opposite directions 11 times every 12 hours. In 6.5 days (156 hours), the number of times is (156 / 12) * 11 = 13 * 11 = 143.

AI explanation

In a standard 12-hour period, the hands of a clock point in opposite directions 11 times. Over six and a half days, which is exactly 156 hours, we have thirteen 12-hour cycles. Multiplying 11 occurrences per cycle by 13 cycles gives a total of 143 times. The result is 143.