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 addition and division write the quotient when the sum of 69 and 96 is divided by
(i) 11
(ii) 15
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 both 4 and 8 but not by 32.
Look at the patterns of numbers in hexagons.
Each side has 2 circles and 1 box.
- Look at the number 65 in the box. Which are the circles next to it?
- Can you see how the rule works?
Are they equal?
If B × B = AB, then either A = 2, B = 5 or A = ______, B = ______.
If the digit 1 is placed after a 2-digit number whose tens is t and ones digit is u, the new number is ______.
If AB + 7C = 102, where B ≠ 0, C ≠ 0, then A + B + C = 14.
756x is a multiple of 11, find the value of x.
If 148101B095 is divisible by 33, find the value of B.
