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What is the 6th term of (s + t)9
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dint understood the question (s+t)9 is what ?
What is the 6th term of (s + t)9? 125s5t4 125s6t3 125s2t7 125s4t5
(r+1)th term of (a + b^n = nCr a^(n-r)b^r
so for your example r = 5 and n = 7
Sorry n = 9
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