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If a, b, c are in A.P. and b-a, c-b, a a...

If a, b, c are in A.P. and b-a, c-b, a are in G.P. then a:b:c=?

A

`4:3:2`

B

`2:3:4`

C

`1:2:3`

D

`3:4:5`

Text Solution

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The correct Answer is:
C
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ARIHANT SSC-SEQUENCE, SERIES & PROGRESSIONS-EXERCISE LEVEL-1
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  2. The sum of n terms of a progression is 3n^2 + 5 . The number of terms ...

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  3. If a, b, c are in A.P. and b-a, c-b, a are in G.P. then a:b:c=?

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  4. The sum of first n terms of the series 1/2 + 3/4 + 7/8 + (15)/(16) + …...

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  5. The sum of all two digit numbers which when divided by 4 , yield unity...

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  6. If n arithmetic means are inserted between two quantities a and b , th...

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  7. The product of n geometric means between two given numbers a and b is ...

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  8. If a1, a2 ,a3 ,......a(24 are in arithmetic progression and a1 +a5 +...

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  9. The sum of n terms of the series , where n is an even number 1^2 - 2...

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  10. underset("n-digit")ubrace((666…6)) + underset("n-digit")ubrace((888…8)...

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  11. The cubes of the natural numbers are grouped as 1^3 , (2^3, 3^3) , (4^...

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  12. Three non-zero real numbers form an A.P. and the squares of these numb...

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  13. If three positive real numbers a,b,c, are in A.P. such that a*b*c=4 , ...

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  14. Three numbers form an increasing G.P. . If the middle number is double...

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  15. What is the angle of elevation of the sun from the top of a pillar, wh...

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  16. Two men on either side of a tower 75 m high observe the angle of eleva...

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  17. If the A.M of two positive numbers a and b, (a gt b) is twice their G....

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  18. Find the number of common terms to the two sequences 17,21,25,...,417 ...

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  19. The sum of n terms of the series (1)/(sqrt(1) + sqrt3) + 1/(sqrt3 +...

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  20. Let T, be the rth term of an A.P. for r = 1, 2, 3 … if the some positi...

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