Question Paper
Class / Subject: Class 10 (CBSE) · Mathematics
Chapter: Chapter 5 — Chapter 5: Arithmetic Progressions
Time Allowed: 15 minutes
Max Marks: 6
1. The nth term formula for an AP is: [1]
(A) a+(n-1)d
(B) a x n x d
(C) a+n+d
(D) a/(n-1)
2. Find the 15th term of the AP 3,7,11,15... (a=3, d=4): [1]
(A) 59
(B) 63
(C) 55
(D) 47
3. In an AP, 'd' represents the: [1]
(A) common difference
(B) first term
(C) number of terms
(D) last term
4. The sum of n terms of an AP is given by: [1]
(A) n/2[2a+(n-1)d]
(B) a+(n-1)d
(C) n x a x d
(D) a/n
5. Find the sum of the first 10 terms of the AP 1,3,5,7...: [1]
(A) 100
(B) 90
(C) 110
(D) 55
6. The formula for the sum of n AP terms was historically associated with: [1]
(A) Carl Friedrich Gauss
(B) Euclid
(C) Pythagoras
(D) René Descartes