CHOOSE THE NUMBER WHICH IS DIFFERENT FROM THE REST -
A. 28
B. 72
C. 45
D. 81
Answers
Answer:
The number which is different from the rest is A. 28
Step-by-step explanation:
The numbers given are 28, 72, 45, and 81.
We have to find the odd one from the given numbers.
- First term: 28 = 2+8 = 10
- Second term: 72 = 7+2 = 9
- Third term: 45 = 4+5 = 9
- Fourth term: 81 = 8+1 = 9
As we can see, the sum of the digits of the second, third, and fourth terms equal to 9.
This implies that the second, third, and fourth terms are divisible by 3.
However, the sum of the digits of the first term is equal to 10. Hence, the first term is not divisible by 3.
As a result, the terms 72, 45, and 81 are divisible by 3 whereas the term 28 is not divisible by three.
Therefore, the number which is different among the given numbers is 28.
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Answer:
Correct answer is option A
Step-by-step explanation:
We have to find the odd one from the given numbers.
First term: 28 = 2+8 = 10
Second term: 72 = 7+2 = 9
Third term: 45 = 4+5 = 9
Fourth term: 81 = 8+1 = 9
As we can see, the sum of the digits of the second, third, and fourth terms equal to 9.
This implies that the second, third, and fourth terms are divisible by 3.
However, the sum of the digits of the first term is equal to 10. Hence, the first term is not divisible by 3.
As a result, the terms 72, 45, and 81 are divisible by 3 whereas the term 28 is not divisible by three.
Therefore, the number which is different among the given numbers is 28.
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