The number of terms common to both the arithmetic progressions 2,5,8,11,...., 179 and 3,5,7,9,....., 101 is
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If the square of the 7th term of an arithmetic progression with positive common difference equals the product of the 3rd and 17th terms, then the ratio of the first term to the common difference is:
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Let a1, a2,.......a3n be an arithmetic progression with a1 = 3 and a2 = 7. If a1 + a2 + ......+a3n = 1830, then what is the smallest positive integer m such that m (a1 + a2 + ..... + an) > 1830?
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An infinite geometric progression a1, a2, a3,... has the property that an = 3(an+1 + an+2 +....) for every n ? 1. If the sum a1 + a2 + a3 +...... = 32, then a5 is
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If a1 = 1/2x5 , a2 = 1/5x8 , a3 = 1/8x11,...., then a1 + a2 + a3 + ...... + a100 is
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