Question
Find the wrong number in the given number series.
8, 12, 21, 46, 95, 195Solution
ATQ,
The sequence follows this pattern:
8 + 2² = 8 + 4 = 12
12 + 3² = 12 + 9 = 21
21 + 5² = 21 + 25 = 46
46 + 7² = 46 + 49 = 95
95 + 11² = 95 + 121 = 216
So, 216 should replace 195.
How many numbers lie between 2000 and 3000 divisible by 5 can be made with the digits 2, 3, 4, 5, 6, 7 and 8 without repeating any digit?
The total of five back-to-back even numbers is 150. What’s the value of (cube of the least) – (square of the greatest)?
Sum of squares of three consecutive numbers is 1325. Find the sum of first and third number.
What should come in place of the question mark (?) in the following question?
3/8 × 4/7 ? = 5376
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