Arithmetic Progressions: Grade 10 Quiz

Froggy Jumps

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AP basics and problems

sowmiya Sowmi68

India

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Arithmetic Progressions: Grade 10 Quiz


Froggy Jumps Arithmetic Progressions: Grade 10 QuizVersion en ligne AP basics and problems par sowmiya Sowmi68 1 What is the nth term formula for an arithmetic progression with first term a and common difference d? a a_n = a + n d/2 b a_n = a + nd c a_n = a + (n-1)d 2 In an AP with a=5 and d=3, what is the 7th term? a 20 b 26 c 23 3 Sum of first n terms S_n of an AP with first term a and difference d is? a S_n = n(a + d) b S_n = n/2 (a + an) c S_n = n/2 [2a + (n-1)d] 4 Given a1=4 and d=-2, what is a20? a -20 b -24 c -34 5 In an AP, what is a3 in terms of a1 and d? a a3 = a1 + d b a3 = a1 + 3d c a3 = a1 + 2d 6 If a1=7 and a4=19, find the common difference d. a 4 b 3 c 5 7 What is the average of the first and last term in an AP (a1 and an)? a an/2 b (a1 + an)/2 c a1 + an 8 What is a10 for a1=2 and d=-1? a 7 b -6 c -7 9 If the first term is 8 and the common difference is -2, what is a15? a -20 b -18 c -22 10 What is the formula for S_n in terms of a1 and an? a S_n = (a1 + an)/n b S_n = n(a1 + an)/2 c S_n = n(a1 + an)