Math Chapter Wise

EnglishPGT 2013

Q141.If (a–b)2,(b–c)2,(c–a)2 are in A.P. then 1 1 1,, a b b c c a − − − − − − − − − − − − will be:

AHarmonic proression BGeometric progression CArithmetic progression DNone of these

Show answer

EnglishPGT 2010

Q142.The third term of Geometric Progression is 4. The product of first five terms is

A43 B45 C43 Dnone of these

Show answer

EnglishPGT 2010

Q143.If three numbers are in H.P. and if sum of their reciprocals is 15 and product of their reciprocals is 80, then the numbers are

A1 1 1,, 3 6 9 B1 1 1,, 2 4 8 C1 1 1,, 3 5 7 D1 1 1,, 2 5 8

Show answer

EnglishPGT 2010

Q144.If the sum of four consecutive terms of an A.P. is 28 and the sum of their squares is 216, then the difference of two terms will be

A1 B2 C3 D4

Show answer

EnglishPGT 2009

Q145.If a, b, c are in harmonic progression, then 2a–b, b, 2c –b are in

AGeometric progression BArithmetic progression CHarmonic progression DNone of these

Show answer

EnglishPGT 2005

Q146.If 5th term of an H.P. is 7 and 7th term is 5, then its 12th term is-

A2/35 B−12/35 C12/35 D35/12

Show answer

EnglishPGT 2004

Q147.If a, b, c are in G.P. and x, y are arithmetic means of a, b and b, c respectively then a c x y + is equal to

A2 B3 C4 D1

Show answer

EnglishPGT 2004

Q148.If (12 – t1) + (22 – t2) +.…+ (n2 – tn)= 1 3 n(n2 –1), then tn is equal to

A2/n Bn - 1 Cn + 1 Dn

Show answer

EnglishPGT 2004

Q149.The harmonic mean of the roots of the equation 2 (5 2) (4 5) 8 2 5 0 x x + − + + + = + − + + + = + − + + + = + − + + + = is

A2 B4 C6 D8

Show answer

EnglishPGT 2003

Q150.What is the sum of the series upto n terms 1+4+8+13+19+26+….n terms?

A() 2 6 1 6 + − n n n B() 2 6 1 6 − + n n n C() 2 6 1 6 − − n n n D() 2 1 6 − − n n n

Show answer

EnglishPGT 2003

Q151.What is the sum of the series upto n terms 4+44+444+… n terms?

A() 40 4 1 10 81 9 n − − B() 40 4 10 1 81 9 n − − C() 40 10 1 81 n − DNone of these

Show answer

EnglishPGT 2002

Q152.For a real number x, [x] denotes the integral part of x, The value of: 1 1 1 1 2 1 99..... 2 2 100 2 100 2 100 + + + + + + + + + + + + + + + + + + + + + + + + is

A49 B50 C48 D51

Show answer

EnglishPGT 2002

Q153.If 1 1 2 loga logc logb + = + = then a, b, c are in:

AA.P. BG.P. CH.P. DNone of these

Show answer

EnglishPGT 2002

Q154.If log a, log b, log c are in A.P., then a, b, c are in:

AA.P. BG.P. CH.P. DNone of these

Show answer

EnglishPGT 2000

Q155.If a, b, c, d, e, f are arithmetic mean between 2 and 12. Then a+b+c+d+e+f is equal to:

A14 B42 C84 DNone of these

Show answer

EnglishPGT 2000

Q156.The sum of 25 terms of the progression 9 15 3 6...... 2 2 + + + + + + + + + + + + + + + + is:

A523 B524 C525 D520

Show answer

EnglishPGT 2000

Q157.The sum of n term of A.P. is:

A() n S 2a n 1 d 2 = + − B() n S 2a n 1 d 3 = + − C() n S n 2a n 1 d = + − DNone of these

Show answer

EnglishPGT 2000

Q158.Any A.P. of 50th terms the last terms is 101 and common difference is 2 the First term is:

A3 B2 C5 D1

Show answer

EnglishRajasthan TGT 2016

Q159.If a, b, c are the pth, qth and rth terms respectively of an arithmetic progression and also the pth, qth and rth terms of a geometric progression, then ab–c bc–a ca–b is equal to

A0 B1 Cabc D(abc)a+b+c

Show answer

EnglishRajasthan TGT 2016

Q160.If a b m x y + = + = and b a n x y + = + =, then y x is equal to

Ama nb na mb + Bma nb na mb − + C−ma nb/na mb Dma nb na mb + −

Show answer