Question
Select the option in which the numbers are NOT related
in the same way as are the numbers of the following set. (12, 72, 720)Solution
The pattern followed here is: The 1st number is multiplied by 6 to obtain the 2nd number, and the 2nd number is multiplied by 10 to obtain the 3rd number. In the given set (12, 72, 720) → 12 x 6 = 72, 72 x 10 = 720 Checking the options: Option A: (6, 36, 360) → 6 x 6 = 36, 36 x 10 = 360 Option B: (11, 66, 660) → 11 x 6 = 66, 66 x 10 = 660 Option D: (8, 48, 480) → 8 x 6 = 48, 48 x 10 = 480 Option C (15, 90, 800) → 15 x 6 = 90, 90 x 10 = 900
The 5th term of an arithmetic progression is 23 and the 12th term is 72. Find the first term and the common difference.
The sum of first 'n' natural numbers is 465. Find 'n'.
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The areas of three adjacent faces of a cuboid are 32 cm2,24cm2 and 48cm2.Find the volume of cuboid.(in cm) 3
Calculate the mean of these numbers:
18, 14, 22, 16, 20, 12
The sum to n terms of the series 1 + 1 + 3 + 1 + 3 + 5 + 1 + 3 + 5 + 7 …………………… is
Find the average value of the given data:
25, 30, 28, 32, 35, 40, 20
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.
The sum of the first 10 terms of an arithmetic sequence is 60 and the 10th term is 5. What is the first term of the sequence?
Find the mean of the given data set:
7, 11, 9, 13, 15, 10
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