Find the missing number in the series given as: 4, 7, 11, 19, 32, 54, ?, 149, 245निम्नलिखित श्रृंखला में लुप्त संख्या का पता लगाइये। 4, 7, 11, 19, 32, 54, ?, 149, 245
Pick an option to check yourself, or open the answer below.
Show answer & explanation
Correct answer: B. 90
Explanation
Each term = sum of the previous two terms + an increasing number (0, 1, 2, …): 4+7 = 11, 7+11+1 = 19, 11+19+2 = 32, 19+32+3 = 54, 32+54+4 = 90, 54+90+5 = 149, 90+149+6 = 245. Every later term fits, so the missing number is 90.प्रत्येक पद = पिछले दो पदों का योग + बढ़ती संख्या: 4+7 = 11, 7+11+1 = 19, 11+19+2 = 32, 19+32+3 = 54, 32+54+4 = 90, 54+90+5 = 149, 90+149+6 = 245। बाद के सभी पद मेल खाते हैं, अतः लुप्त संख्या 90 है।More Mathematical Reasoning and Aptitude questions
- A sum of Rs. 1550 is lent out into two parts, one at 8% and the other at 6%. If the total annual income is Rs. 106, then find the money len…
- Find a single discount equivalent to a series of discounts 10%, 20% and 30%
- The ratio of the present ages of two persons A and B is 4:3. If 4 years ago, the ratio of their ages was 2:1, what is the present age of A…
- Find the average of squares of consecutive even numbers from 1 to 20?
- 40 people consume 320 kg of rice in 50 days. In how many days will 30 people consume 80 kg of rice?
- If the selling price of Rs. 623 results in a discount of 11% on the market price of an item, at what price should the item be sold to offer…