Advertisements
Advertisements
प्रश्न
Which of the following statement is true?
If two numbers are co-prime, at least one of them must be a prime number.
विकल्प
True
False
Advertisements
उत्तर
False
Example: 4 and 9 are co-prime numbers but both are composite numbers too.
APPEARS IN
संबंधित प्रश्न
Given an example of a number which is divisible by 4 but not 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.
Do you remember magic triangles? Come now, let s make some magic squares.
- Fill this square using all the numbers from 21 to 29.
Rule: The total of each side is 75.
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?
Fill in the blank space in the same way.
The sum of a two-digit number and the number obtained by reversing the digits is always divisible by ______.
If A × 3 = 1A, then A = ______.
A three-digit number abc is divisible by 6 if c is an even number and a + b + c is a multiple of 3.
If AB + 7C = 102, where B ≠ 0, C ≠ 0, then A + B + C = 14.
Find the least value that must be given to number a so that the number 91876a2 is divisible by 8.
