Question
A frog wants to cross the pond. He saw 5 turtle’s
shell which can help him to reach at the end of pond. Frog can move either 1 or 2 steps at a time. Find the number of ways in which a frog can cross the river? (Frog can’t take double step from last shell).Solution
The frog needs to take 6 steps to cross the pond. He can do this in the following ways: Crossing the pond by 6-unit steps = 1 way. Crossing the pond by 4-unit steps and 1 double step = 5C1 = 5C4 = 5 ways. Crossing the pond by 2-unit steps and 2 double steps = 4C2 = 6 ways. Crossing the pond by 3 double steps = 1 way. Hence, the required number of ways = 1 + 5 + 6 + 1 = 13
192.251 + 326.233 + 125.021 + 19.273 = ?
- Simplify the following expression:
300% of (3341 – 471) = ? × (√4225/195)
? × 5.5 = √1225 + 40% of 30% of 37.5% of 5000 – 63
What will come in the place of question mark (?) in the given expression?
√1936 + (84 ÷ 2 × 1.5) – 35² + 18² = ?
2350 – 4830 + 9570 + 3350 – 1720 = ?
What will come in the place of question mark (?) in the given expression?
(96 - 59) X 6 + ?2 = 136.5 X 4
What will come in the place of question mark (?) in the given expression?Â
(240% of 175 ÷ √16) X 6 + 80% of 400 = ?3 + 179 + 42
Relevant for Exams:
