SSLC (English Medium) कक्षा ८ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Mathematics

If the present population of a city is P and it increases at the rate of r% p.a, then the population n years ago would be `"P"(1 + "r"/100)^"n"`

The present value of a machine is ₹ 16800. It depreciates at 25% p.a. Its worth after 2 years is ₹ 9450

The time taken for ₹ 1000 to become ₹ 1331 at 20% p.a, compounded annually is 3 years

The compound interest on ₹ 16000 for 9 months at 20% p.a, compounded quarterly is ₹ 2522

Find the compound interest on ₹ 3200 at 2.5% p.a for 2 years, compounded annually

Find the compound interest for `2 1/2` years on ₹ 4000 at 10% p.a, if the interest is compounded yearly

A principal becomes ₹ 2028 in 2 years at 4% p.a compound interest. Find the principal

In how many years will ₹ 3375 become ₹ 4096 at `13 1/3` p.a if the interest is compounded half-yearly?

Find the C.I. on ₹ 15000 for 3 years if the rates of interest are 15%, 20% and 25% for the I, II and III years respectively

The number of conversion periods in a year, if the interest on a principal is compounded every two months is ___________

The time taken for ₹ 4400 to become ₹ 4851 at 10%, compounded half yearly is _______

The cost of a machine is ₹ 18000 and it depreciates at `16 2/3 %` annually. Its value after 2 years will be ___________

The sum which amounts to ₹ 2662 at 10% p.a in 3 years, compounded yearly is _________

Find the rate of compound interest at which a principal becomes 1.69 times itself in 2 years

The upper limit of the class interval (25 - 35) is _____________

The range of the data 200, 15, 20, 103, 3, 196, is _____________

If a class size is 10 and range is 80 then the number of classes are ___________

Inclusive series is a continuous series

Represent the following data in ungrouped frequency table which gives the number of children in 25 families.

1, 3, 0, 2, 5, 2, 3, 4, 1, 0, 5, 4, 3, 1, 3, 2, 5, 2, 1, 1, 2, 6, 2, 1, 4

Form a continuous frequency distribution table for the marks obtained by 30 students in a X std public examination.

328, 470, 405, 375, 298, 326, 276, 362, 410, 255, 391, 370, 455, 229, 300, 183, 283, 366, 400, 495, 215, 157, 374, 306, 280, 409, 321, 269, 398, 200