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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

divisible by (11 + 13)

B

divisible by (13 - 11)

C

divisible by `(11 xx 13)`

D

429

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Verified by Experts

The correct Answer is:
C
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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.

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KIRAN PUBLICATION-NUMBER SYSTEM-TEST YOURSELF
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  5. Find the greatest number of 4 digits and the least number of 5 digits ...

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  7. Find out the unit digit in (12^(55))/(3^(11))+(8^(48))/(16^(18))

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  10. How many numbers are co-prime to 4608 that lie between 1000 and 2000 ?

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  11. What is the value of (1)/((0.1)^(2))+(1)/((0.01)^(2))+(1)/((0.2)^(2))+...

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  12. Which of the following statement (s) is/are true ? I. (1+(2)/(3)) (1...

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  13. What is the value of N if N=624^(2)+625xx623-628xx620-630xx618

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  14. What is the value of ((4.3)^(3)+(3.2)^(3)-(7.5)^(3)+10(12.9)(1.6)(1.5)...

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  15. If S=(1)/(1xx2xx3)+(1)/(1xx3)+(1)/(2xx3xx4)+(1)/(3xx5)+(1)/(3xx4xx5)+(...

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  16. What is the value of 3^(2)+6^(2)+9^(2)+.....+60^(2)?

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  17. What is the value of 54^(3)+60^(3)+66^(3)+72^(3)+78^(3)+...+120^(3)?

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  18. What is the value of sqrt(3094+ sqrt(1740+sqrt(562+sqrt(192+4))))

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  19. Which of the following statement(s) is/are True? I. (4)/(65) lt (7)/...

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  20. If A=4^(12),B=1+4+4^(2)+4^(3)+...+4^(11),C=1+16+16^(2)+...+16^(5) then...

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  21. Which of the following statement(s) is/are True ? I sqrt(5)+sqrt(3) ...

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