Advertisements
Advertisements
प्रश्न
20 × 3 is a multiple of 3 if the digit × is ______ or ______ or ______.
Advertisements
उत्तर
20 × 3 is a multiple of 3 if the digit × is 1 or 4 or 7.
Explanation:
We know that, if a number is a multiple of 3, then the sum of its digits is again a multiple of 3, i.e. 2 + 0 + x + 3 is a multiple of 3.
x + 5 = 0, 3, 6, 9, 12, 15 But, x is a digit of the number 20 × 3.
x can take values 0, 1, 2, 3, ........ 9.
⇒ x + 5 = 6 or 9 or 12
Hence, x = 1 or 4 or 7
APPEARS IN
संबंधित प्रश्न
Without performing actual computations, find the quotient when 94 − 49 is divided by
(i) 9
(ii) 5
Given an example of a number which is divisible by 2 but not by 4.
Given an example of a number which is divisible by both 4 and 8 but not by 32.
Which of the following statement is true?
If a number is divisible by 4, it must be divisible by 8.
Which of the following statement is true?
If a number exactly divides the sum of two numbers, it must exactly divide the numbers separately.
Which of the following statement is true?
The sum of two consecutive odd numbers is always divisible by 4.
Now you try and change these numbers into special numbers —
28
If AB × 4 = 192, then A + B = 7.
1y3y6 is divisible by 11. Find the value of y.
Fill in the blank space in the same way.
