EnglishUP PGT-2016 (02-02-2019)
Q101.The value of 2 2 2 2 1 3 5.... (2n 1) + + + + − + + + + − + + + + − + + + + − is
Correct answer: () 2 1 n 4n 1 3 −
EnglishUP PGT-2016 (02-02-2019)
Q102.The least value of 'n', for which 2 n 1 1 3 3.... 3 700 − + + + + > + + + + > + + + + > + + + + > is equal to
Correct answer: 7
EnglishUP PGT-2016 (02-02-2019)
Q103.Value of 1 1 1 1 1... 1... 2 3 2 3 + + + − + − + + + − + − + + + − + − + + + − + − is
Correct answer: 2 1 1 2 2 e e −
EnglishUP PGT-2016 (02-02-2019)
Q104.What is a a a a a 1 n 1 lim 1 2 3..... n, n + + →∞ + + + + + + + + + + + + + + + + a>–1,
Correct answer: 1 a 1 +
EnglishDSSSB 23 SEP 2018 (9 AM-11 AM)
Q105.If m is an Arithmetic series and the first term of each of them has unit and common difference 1,2,3,...... m respectively. Then what will be the sum of their nth terms?
Correct answer: [ ] n mn m n 1 2 − + +
EnglishDSSSB 23 SEP 2018 (9 AM-11 AM)
Q106.Four arithmetic series, The sum of the terms is S1, S2, S3 and S4 and the first term of each is 2 and common difference is 1,3,5, and 7 respectively then:
Correct answer: S4 + S1 = S2 + S3
Q107.The sum of three numbers in arithmetic progression is 51 and the product of first and third terms is 273. The common difference in this progression is
Correct answer: 4
Q108.The harmonic mean of two numbers is 4. If their arithmetic mean A and geometric mean G satisfy the equation 2A+G2 =27, then the numbers are
Correct answer: 3, 6
Q109.If n n 0 r s,|r | 1, ∞ = < ∑ ∑ then 2n n 0 r ∞ = ∑ ∑ is equal to
Correct answer: 2 s 2s 1 −
Q110.If x is the first term of a geometric progression and the sum of its infinite terms is 1/3, then x lies in the interval
Correct answer: 2 0 x 3 < <
Q111.The sum of first ten terms of the series 1 1 1.... 21 77 165 + + + + + + + + + + + + is
Correct answer: 10/129
Q112.The sum of the series 72+70+68+....+40 is
Correct answer: 952
EnglishDSSSB TGT (SECTION-B) 28 DEC 2014
Q113.The arithmetic mean between the numbers 2 (x y) and 2 (x y) is equal to–
Correct answer: 2 2/x y
EnglishDSSSB TGT (SECTION-B) 28 DEC 2014
Q114.The sum of the finite series 5 8 11.... 47 50 is–
Correct answer: 440
EnglishDSSSB TGT (SECTION-B) 28 DEC 2014
Q115.If three positive integers a, b, c are in G.P., then log a, log b, log c are in–
Correct answer: A.P.
EnglishDSSSB TGT (SECTION-B) 28 DEC 2014
Q116.If 3 log 81 x, then the value of x is–
Correct answer: 8
EnglishDSSSB TGT (SECTION-B) 28 DEC 2014
Q117.How many terms of the G.P. 3, 3 3,,..., 2 4 are needed to give the sum 3069? 512
Correct answer: 10
EnglishSECTION B PGT TIER-I 31.11.2014
Q118.The limit of the sequence 0.5, 0.55, 0.555... is–
Correct answer: 5/9
EnglishJDD-75-PGT TIER II-X-15 28.06.2015
Q119.The average of all multiples of 10 from 2 to 198 is–
Correct answer: 100
EnglishHaryana PGT 2018 JDD-75-PGT TIER II-X-15 28.06.2015
Q120.If log 2, log (2x –1) and log (2x +3) are in arithmetic progression, then x is equal to–
Correct answer: log25