Question
A man invests ₹20,000 in a scheme that offers a 10%
simple interest per annum. After how many years will his total amount become ₹30,000?Solution
Let the principal be P = ₹20,000, Total amount A = ₹30,000, Interest = A - P = ₹30,000 - ₹20,000 = ₹10,000. Using the formula for simple interest: Interest = P × r × t / 100. 10,000 = 20,000 × 10 × t / 100, t = (10,000 × 100) / (20,000 × 10) = 5 years. Answer: a) 5 years.
The question below is based on the given series I. The series I satisfy a certain pattern, follow the same pattern in series II and answer the question...
3, 49, 191, 477, ?, 1673
What will be the next number in the series?
2,5,11,23,47,?
38 40 83 254 ? 5126
24 47 137 ? 2679 16049
...10 625 50 125 250 25 ?
...[(288)2 ÷ 96 × ?] ÷ 44 = 432
1 2 6 ...
3, 4, 10, 33, 136, ?, 4116
77 ? 190 257 331 412
...
