MEDIUM
Diploma
IMPORTANT
Earn 100

An old legend states that a peasant won a reward from a king. The peasant asked to be paid in rice; one grain on the first square of a chessboard, two grains on the second, four on the third square, and so on. Which square would contain exactly 512 grains of rice?

Important Questions on From Patterns to Generalizations: Sequences and Series

MEDIUM
Diploma
IMPORTANT
Given u1=8 and u5=128, find the values of u2,u3 and u4 such that the sequence is geometric.
MEDIUM
Diploma
IMPORTANT

For question below, first decide whether the situation is arithmetic or geometric, then solve accordingly.

A frog fell into a 1 m well and wanted to go back up to the top of the well. Every day it moved up half the distance to the top. After 10 days, how much did the frog have left to climb?

MEDIUM
Diploma
IMPORTANT

For question below, first decide whether the situation is arithmetic or geometric, then solve accordingly.

Your grandparents deposit $2000 into a bank account to start a college fund for you. They will continue to deposit a fixed amount each month if you deposit $5 a month as well. In 36 months, you would like to have $6500 in the account. How much will they have to contribute each month?

MEDIUM
Diploma
IMPORTANT

For question below, first decide whether the situation is arithmetic or geometric, then solve accordingly.

The Chinese zodiac associates years with animals, based on a 12-year cycle. Samu was born in 1962, the Year of the Tiger. He lives in Finland, which celebrated its centennial in 2017 . Did Finland gain its independence in the Year of the Tiger?

MEDIUM
Diploma
IMPORTANT

For question below, first decide whether the situation is arithmetic or geometric, then solve accordingly.

A scientist puts six bacteria, which multiply at a constant rate, in a Petri dish. She records the number of bacteria each minute thereafter. If she counts 324 bacteria 20 minutes later, at what rate are the bacteria reproducing?

MEDIUM
Diploma
IMPORTANT
For the series given below, decide whether it is arithmetic or geometric, then find the sum upto seven terms.
15+815+1315+
MEDIUM
Diploma
IMPORTANT
For the series given below, decide whether it is arithmetic or geometric, then find the sum.
n=1812(-3)n
MEDIUM
Diploma
IMPORTANT
For the series given below, decide whether it is arithmetic or geometric, then find the sum.
0.1+0.05+0.025+S8