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If a number is divisible by both 11 and ...

If a number is divisible by both 11 and 13, then it must be necessarily :

A

(11 + 13)

B

(13 - 11)

C

(11*13)

D

N.O.T.

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Which of the following statements are true? If a number is divisible by 3, it must be divisible by 9. If a number is divisible by 9, it must be divisible by 3. If a number is divisible by 4, it must be divisible by 8. If a number is divisible by 8, it must be divisible by 4. If a number is divisible by 18, if it is divisible by both 3 and 6. If a number is divisible by both 9 and 10, it must be divisible by 90. If a number exactly divides the sum of two numbers, it must exactly divide the numbers separately. If a number divides three numbers exactly, it must divide their sum exactly. If two numbers are co-prime, at least one of them must be a prime number. The sum of two consecutive odd numbers is always divisible by 4.

Write (T) for true and (F) for false against each of the following statements : (i) If a number is divisible by 4. it must be divisible by 8 . (ii) If a number is divisible by 8 . it must be divisible by 4 . (iii) If a number divides the sum of two number exactly. it must exactly divide the num .bers separately. (iv) If a number is divisible by both 9 and 10 . it must be divisible by 90. (v) A number is divisible by 18 if it is divisible by both 3 and 6 . (vi) If a number is divisible by 3 and 7 . it must be divisible by 21. (vii) The sum of two consecutive odd number is always divisible by 4 . (viii) If a number divides two number exactly. it must divide their sum exactly.

Which of the following statements are true? (a) If a number is divisible by 3, it must be divisible by 9. (b) If a number is divisible by 9, it must be divisible by 3. (c) A number is divisible by 18, if it is divisible by both 3 and 6. (d) If a number is divisible by 9 and 10 both, then it must be divisible by 90. (e) If two numbers are co-primes, at least one of them must be prime. (f) All numbers which are divisible by 4 must also be divisible by 8. g) All numbers which are divisible by 8 must also be divisible by 4. (h) If a number exactly divides two numbers separately, it must exactly divide their sum. (i) If a number exactly divides the sum of two numbers, it must exactly divide the two numbers separately.

Study the given statements carefully. State T for true and 'F' for false and select the correct option. (i) If a number is a factor of each of the given two numbers, then it must be factor of their a difference. (ii) If a number is divisible by another number, then it must be divisible by each of the factors of that number. (iii) If a number is divisible by another number, then it is also divisible by all the multiples of that number. (iv)No prime number other than 2 is even but every odd number is necessarily a prime number.

Which of the following statements are true? If a number divisible by 3, it must be divisible by 9. If a number is divisible by 9, it must be divisible by 3. If a number is divisible by 4, it must be divisible by 8. If a number id divisible by 8,it must be divisible by 4. A number is divisible by 18, if it is divisible by both 3 and 6. If a number divisible by both 9 and 10, it must be divisible by 90.

If a number is divisible both by 2 and 3, then it is divisible by 12.

State whether the statement given is true (T) or false (F): If a number a is divisible by b, then it must be divisible by each factor of b.

The number 10^N-1 is divisible by 11 for :

GAGAN PRATAP -NUMBER SYSTEM-Multiple Choice Questions
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  3. If a number is divisible by both 11 and 13, then it must be necessaril...

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  4. 83462*704 is divisible by 3, then the sum of possible digits in place ...

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  5. The largest number which could replace * in the 2365*4 to make the num...

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  7. If 746832*71 is divisible by 9, then the digit in place of * is:

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  8. How many pairs of X and Y are possible in the number 763X4Y2, if the n...

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  9. If 8947A56B1 is divisible by 9, where B is an odd number. Find the sum...

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  10. Find the remainder when 123456789101112 . . . is 97- digit number di...

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  11. What is the least value of x such that 517x324 is divisible by 12? ...

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  12. If 11-digit number 543247 x 968y is divisible by 90, then the value of...

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  13. What is the value of x so that the seven digit number 5656x52 is divis...

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  14. What is the value of x so that the seven digit number 91876x2 is divis...

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  15. If a nine-digit number 389x6378y is divisible by 72, then the value of...

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  16. If the 11-digit number 5678x43267y is divisible by 72, then the value ...

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  17. If a 10-digit number 5432y1749x is divisible by 72, then what is the ...

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  18. If the 10-digit number 897359y7x2 is divisible by 72, then what is the...

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  19. For what value of x is the seven digit number 46393x8 divisible by 11?...

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  20. What should replace * in the number 94*2357, so that the number is div...

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