Question
The first odd number is 1, second is 3, third is 5 and
fourth is 7 and so on, then find the 188th odd number?Solution
an = a + (n - 1) × d a = 1 a2 = 3 ⇒ a + d = 3 ⇒ 1 + d = 3 ⇒ d = 2 Now, a = a + 187d = 1 + 187 × 2 = 375
What is the mean of the following numbers:
9, 15, 18, 12, 14, 20, 22, 16
If 3, x, y, 48 are in GP and x, y, 45 in AP, find x and y.
If 5th term of an AP is 20 and 10th term is 45, find 25th term.
The average weight of a class of 25 student is 60 KG. If X is student joined the class, than the average weight of whole class increases by (2X – 7...
15 is divided in three parts which are in arithmetic progression (A.P.) in such a way that the sum of their square is 83. Find the smallest part?
14, 28, 56, 112, ...... The sum of first 10 numbers in the series is:
The mode and the mean of grouped data are 25 and 29.5 respectively. Find the median, correct to two places of decimal, using empirical relation.
Find the third proportion of 16 and 24.
The median of the following data will be ___
32,25,33,27,35,29,14,26 and 30.
What is the median of the following list of numbers: 5, 3, 6, 9, 11, 19,12,20, and 1?
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