To determine which number is divisible by both 2 and 5, we need to check the divisibility rules for both:
· Divisibility by 2: A number is divisible by 2 if its last digit is even (i.e., 0, 2, 4, 6, or 8).
· Divisibility by 5: A number is divisible by 5 if its last digit is 0 or 5.
Step 1: Check each number
1. 63840:
o Last digit is 0, so it is divisible by 5.
o Last digit is even (0), so it is divisible by 2.
o Hence, 63840 is divisible by both 2 and 5.
2) 20792:
o Last digit is 2, so it is divisible by 2.
o Last digit is not 0 or 5, so it is not divisible by 5.
3) 37915:
o Last digit is 5, so it is divisible by 5.
o Last digit is not even, so it is not divisible by 2.
4) 37254:
o Last digit is 4, so it is divisible by 2.
o Last digit is not 0 or 5, so it is not divisible by 5.
Final Answer:
The number 63840 is divisible by both 2 and 5.
Option (a) is the correct answer.
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