Advertisements
Advertisements
प्रश्न
In the following number, replace * by the smallest number to make it divisible by 11:
86*72
Advertisements
उत्तर
86*72
Sum of the digits at odd places 2 + * + 8 = 10 + *
Sum of the digits at even places 6 + 7 = 13
Difference = sum of odd terms – sum of even terms
= 10 + * – 13
= * – 3
Now, (* – 3) will be divisible by 11 if * = 3.
i.e., 3 – 3 = 0
0 is divisible by 11.
∴ * = 3
Hence, the number is 86372.
APPEARS IN
संबंधित प्रश्न
Test the divisibility of the following number by 2:
2650
Test the divisibility of the following numbers by 5:
438750
Test the divisibility of the following numbers by 6:
2070
Test the divisibility of the following numbers by 7:
2345
Test the divisibility of the following numbers by 9:
647514
In the following number, replace * by the smallest number to make it divisible by 9:
835*86
Write (T) for true and (F) for false against the following statement:
If a number divides the sum of two numbers exactly, it must exactly divide the numbers separately.
Write (T) for true and (F) for false against the following statement:
If a number divides two numbers exactly, it must divide their sum exactly.
The least number divisible by each of the numbers 15, 20, 24, 32 and 36 is
Three bells toll together at intervals of 9, 12, 15 minutes. If they start tolling together, after what time will they next toll together?
