Math Chapter Wise

EnglishOAVS TGT 2019

Q41.Arithmetic mean is 15 and all sum of observations is 315 then number of observations are:

A15 B23 C19 D21

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EnglishOAVS TGT 2019

Q42.If the sum of n terms of an A.P. is 48, the first term is 20 and the common difference is –4, then the number of terms is:

A12, 2 B3, 8 C15, 5 D6, 4

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EnglishOAVS TGT 2019

Q43.If the sum of p terms of an A.P. is equal to the sum of q terms (p ≠ q), then the sum of (p + q) terms is:

A1 B–1 C0 D2

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EnglishOAVS TGT 2018

Q44.Write the nth term of the A.P. 1 1 m 1 2m,,,... m m m

Am(n 1) 1/m Bm(n 1) 1/m Cm(n 1)/m Dm(n 1)/m

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EnglishOAVS TGT 2018

Q45.Find the fifth term of the given sequence. 15, 25, 35,....

A65 B55 C45 D75

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EnglishOAVS TGT 2018

Q46.What is the sum of the terms of the given series? 20, 25, 30,........., 150

A2295 B2529 C2925 D5292

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EnglishOAVS TGT 2018

Q47.How many terms are there in the following GP? 5, 20, 80, 320,....., 20480

A6 B7 C8 D9

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EnglishOAVS TGT 2017

Q48.Sum of the natural numbers up to 'n', 1+2+3+.........+ n = _____.

A(n+1)/2 Bn(n–1)/2 Cn (n+1)/2 D(n–1)/2

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EnglishOAVS TGT 2017

Q49.If an = cn an–1 and a2 = 1, where c is constant. The value of a0 is:

A1 2 c B1 2 1 c c C2 1 c D0

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EnglishOAVS TGT 2017

Q50.In the arithmetic progression 16, 32, 40, 52, 64 which number is written wrong?

A32 B64 C52 D40

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EnglishOAVS TGT 2017

Q51.Which of the following is the relation between arithmetic mean, geometric mean and harmonic mean?

AGM=AM×HM BGM2 = AM×HM CAM2 = GM × HM DHM2 =AM × GM

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EnglishOAVS TGT 2017

Q52.In an arithmetic progression the first term is 34 and the last term is 124. If there are 31 numbers in the progression then the common difference is:

A3 B12 C8 D19

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EnglishOAVS TGT 2017

Q53.If each term of an arithmetic progression is multiplied or divided by the same non-zero constant, the resulting sequence will be in

AGeometric progression BArithmetic progression CAll terms become equal DHarmonic progression

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EnglishOAVS TGT 2017

Q54.The sum of n terms of an arithmetic progression is 364 and the sum of (n –1) terms is 340 then the nth term of the progression is:

A42 B36 C40 D24

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EnglishKVS TGT 2017

Q55.The two geometric means between 1 and 64 are

A1 and 64 B8 and 16 C4 and 16 D3 and 16

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EnglishKVS TGT 2017

Q56.The A.M., G.M. and H.M. between two positive numbers a and b are equal, then–

Aab = 1 Ba > b Ca < b Da = b

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EnglishKVS TGT 2017

Q57.If x, 2x+2, 3x+3, are in GP, then the fourth term is–

A27 B–27 C27/2 D27/2

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EnglishKVS TGT 2017

Q58.If x, y, z, are in AP, then the value of (x + y – z) (y + z – x) is–

A8yz –3y2/– 4z2 B4xz + 3y2 C8xy + 4x2/–3y2 D8xz – 3y2

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EnglishKVS TGT 2017

Q59.If the progressions 3, 10, 17,... and 63, 65, 67,... are such that there nth terms are equal then n is equal to–

A13 B15 C9 D8

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EnglishKVS TGT 2017

Q60.The geometric mean of the numbers 3, 9, 27, 81, 243 is–

A9 B27 C81 D3 3

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