## Bharat Gupta is teaching live on Unacademy Plus

SEQUENCE AND SERIES Class -7 (Geometric Proqression)

nth term of an Geometric Progression 2 a n-l Sum of n term of an Geometric Progression

Sum of infinite term of an Geometric Progression =

if a, b, c are in G.P. the a b'c ) (a) a +b C (b) ab + ac +bc (c) a3 + b3 + c3 (d) None If a, b c are respectively the xth, yth and zth terms of G. ., then (y -z) log a + (z -x) log b (x -y) log c - (c) 0 (a) 1 If the common ratio, the last term and the sum of a G.P. are 3, 486 and 728 respectively, then the first term and the number of terms are (a) 2, 5 (b)-1 (d) None (b) 3, 6 (c) 2, 6 (d) None If the sum of the n terms of a G.P. be S, their product P and the sum of their reciprocals R, then (a) p ( (b) p2 (c) 2p2 (d) None

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If a, b, c are in G.P. the a2b2c2(++3) (a) a b C (b) ab + ac + bc (c) a3 + b3 + c3 (d) None

If a, b, c are in G.P the a2b2e2 (-1 + + (a) a b C (b) ab + ac + bc (c) a3 + b3 + c3 (d) None 6 y ow a

If a, b c are respectively the xth, yth and zth terms of G.P., then (y - z) log a + (z -x) log b(x - y) log c- (c) 0 (a) 1 (b)-1 (d) None

If a, b c are respectively the xth, yth and zth terms of G.P., then (y-z) log a + (z-x)log b + (x-y) log c = (c) 0 (a) 1 (b)-1 (d) None YD n-l z-1 C

If the common ratio, the last term and the sum of a G.P. are 3, 486 and 728 respectively, then the first term and the number of terms are (a) 2, 5 (b) 3, 6(c) 2,6 (d) None

If the sum of the n terms of a G.P. be S, their product P and the sum of their reciprocals R, then (a) p (b) p2 (c) 2p2 (d) None

If the sum of the n terms of a G.P. be S, their product P and the sum of their reciprocals R, then (a) p (b) p2 (c) 2p2 (d) None s car" (A7 2