1. What least value must be given to * so that the number 98765*8 is divisible by 8? (A) O (B) 2 (C) 6 (D) 8
Answers
Answer:
The given number is 98765*8
=> Let * be the x ,
the number become 98765x8.
=> divisibility rule of 8 : alternate adding and subtracting the digits, and if the result is the multiple of
8, then the original number is a multiple of 8
=>( 9 + 7 + 5 + 8 ) - ( 8 + 6 + x)
= 15 - x
=> 15 - x = 8
=> x = 7
=> 7 is the least value must be given to * so that the number 987658 is divided by 8
Concept introduction:
The Rule of Divisibility of .
If a number's last three digits are divisible by , the integer is totally divisible by .
Given:
Here a number is given with a blank digit and the number is .
To find:
We have to find the blank digit by which the total no can be divided by .
Solution:
According to the question,
By the rule of The Rule of Divisibility of , if we put and then the last three digits are divisible by .
Then the whole no. also divisible by .
So the correct answer is -
Final answer:
So, the final answer of the question is -
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