Question 43 of 48intermediate🔍 AnalyzeShort Answer3 marks

What numbers should the frog start from to reach 0, taking jumps of 7 each time? What do you observe?

Correct Answer

The frog should start from multiples of 7 to reach 0: 7, 14, 21, 28, 35, 42, 49, 56, etc.

Observation: Only numbers that are multiples of 7 can reach exactly 0 when jumping backwards by 7. Numbers like 1, 2, 3, 4, 5, 6, 8, 9, etc. cannot reach 0 exactly.

Exercise: Let us Think | Q: 3 | (Page Page 22)
For More Understanding

Explanation

To reach 0 by jumping backwards by 7, the starting number must be a multiple of 7. This is because only multiples of 7 can be divided evenly by 7 to give a whole number of jumps.

Solution Steps

  1. To reach 0 by jumping backwards by 7, the starting number must be a multiple of 7.

  2. Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, etc.

  3. Numbers not divisible by 7 cannot reach exactly 0.

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