Question
The difference between the length and breadth of a
rectangle is 25 m. If its perimeter is 206 m, then its area isSolution
Using formula, Perimeter = 2(l + b)  Let the breadth be ‘x’ metre Length = (25 + x) metre ⇒ 2(x + 25 + x) = 206 ⇒ 4x = 206 – 50 ⇒ x = 156/4 = 39 metre Therefore, length = 39 + 25 = 64 metre Therefore, required area = 64 x 39 = 2496 m²
Find the wrong number in the given number series.
120, 126, 138, 162, 220, 306
217Â Â Â Â 210Â Â Â Â Â 236Â Â Â Â Â 299Â Â Â Â Â 423Â Â Â Â 640
...112, 222, 440, 872, 1717 , 3424
In each of the following giving number series, a wrong number is given. Find out the wrong number?
82, 81, 86, 110, 168, 287
- 78, 86, 71, 95, 60, 112
2100, 2140, 2186, 2240, 2300, 2372
9, 10, 12, 18, 42, 160
A-5,  A,  35,  52, 78, 115
Find the wrong number in the given number series.
233, 206, 183, 152, 125, 98
Find the wrong number in the given number series.
2, 4, 12, 48, 120, 1440
Relevant for Exams:
