Math, asked by sodamanibiswal00079, 10 months ago

If A, B are disjoint set such that n(A) =4 and n(AUB) =7 then n(B) ___

Answers

Answered by Granthiksharma

Answer:

Step-by-step explanation:

Answered by Shubhammandaria123

Answer:

In the ratio 3n + 5 : 5n + 7, if you put the value of n as 2n - 1, then you'll get the ratio of nth terms. So this is the answer. So remember this that, if the ratio of sums of two APs are in the ratio an + b : cn + d, then put the value of n as 2k - 1 to find the ratio of kth terms.

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