Question
Find the value of 'a' in the given data if the mean of
the given data is 18. 12, 15, 20, 17, 19, 14, 21, a, 13, 16Solution
Sum of each term of given data = 10 × 18 = 180 So, 12 + 15 + 20 + 17 + 19 + 14 + 21 + a + 13 + 16 = 180 Or, 147 + a = 180 Or, 'a' = 33 Hence, option C.
More No. System Questions
(11/12) × (18/22) × (4/3) + 3 = ?2
- What will come in the place of question mark (?) in the given expression?
32% of 74% of ? = 16% of 37% of 180 30% of 215 + 135% of ? = 469.5
800 + 900 X (3)-2 - ? = 25 X 60 ÷ 2
1555.5 + 1000.8 – 1354.3 = ? + 52
- What will come in place of (?), in the given expression.
(4² + 6²) × 2 = ? - 55% of 220 – 15% of 40 = 20% of ?
50 ÷ 2.5 × 64 + ? = 1520
(-251 × 21 × -12) ÷ ? = 158.13
