EASY
Earn 100

Three/Four statements are given followed by four conclusions I, II, III and IV. You have to consider the given statements to be true, even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusion can definitely be drawn from the given statement. Indicate your answer.
Statements :
Some candles are lamps. No bulb is a candle.
Some lamps are not bulbs. Some lamps are fans.
Conclusions :
I. No fan is a bulb.
II. Some lamps are bulbs.
III. Some fans are bulbs.
IV. Some fans are candles.

50% studentsanswered this correctly

Important Questions on Sequences and Series

EASY
Select the correct set of symbols: 219137=195
EASY
For a sequence, if Sn=5n-2n2n, then its fourth term is
EASY
The sum of all tree digit numbers which are odd is ?
EASY
What is the value of 21 + 22 +...... + 46?
MEDIUM
The sum of the series 1x+1+2x2+1+22x4+1++2100x2100+1 when x=2 is:
MEDIUM
The sum of the following series 1+6+912+22+327+1212+22+32+429+15(12+22++52)11+.... up to 15 terms, is:
MEDIUM

The angles of a triangle are in AP (arithmetic progression). If measure of the smallest angle is 50° less than that of the largest angle, then find the largest angle.

MEDIUM
The difference between two numbers is 48 and the difference between their arithmetic mean and their geometric mean is 18. Then, the greater of two numbers is 
EASY

How many numbers are there from 200 to 800 which are neither divisible by 5 nor by 7?

MEDIUM
The number of terms common to both the arithmetic progressions 2,5,8,11,,179 and 3,5,7,9,,101 is
EASY
What will be the 10th number in the series 12, 19, 26, 33,_____?
EASY
The sum of third and ninth term of an A.P is 8. Find the sum of the first 11 terms of the progression.
HARD
For kN, let 1α(α+1)(α+2).(α+20)=K=020Akα+k, where α>0. Then the value of 100A14+A15 A132 is equal to ____________.
MEDIUM
The angles of a pentagon are in arithmetic progression.The sum of the smallest and largest angle is
EASY
If 11×2+12×3+13×4+.......+1nn+1=99100 then what is the value of n?
EASY
A person saves 1000 more than he did the previous year. If he saves 2000 in the first year, in how much many years will he save 170000?
EASY

 Let Sn=1·(n-1)+2·(n-2)+3·(n-3)++(n-1)·1, n4. 

The sum n=42 Snn!-1(n-2)! is equal to : 

MEDIUM
Rs. 720 was divided among A, B, C, D and E. The sum received by them was in ascending order and in Arithmetic Progression. E received Rs. 40 more thanA . How much did B received?