2.3+2.3.4+3.4.5+-...." ntumy "

Find S_n for the series. 1.2.3.4 + 2.3.4.5 + 3.4.5.6 +…

A company manufactures car batteries of a particular type. The lives (in years) of 40 such batteries were recorded as follows: 2.6 3.0 3.7 3.2 2.2 4.1 3.5 4.5 3.5 2.3 3.2 3.4 3.8 3.2 4.6 3.7 2.5 4.4 3.4 3.3 2.9 3.0 4.3 2.8 3.5 3.2 3.9 3.2 3.2 3.1 3.7 3.4 4.6 3.8 3.2 2.6 3.5 4.2 2.9 3.6 Construct a grouped frequency distribution table for this data, using class intervals of size 0.5 starting from the interval 2 - 2.5.

What would come next in the following number sequence ? 2 3 2 3 4 2 3 4 5 2 3 4 5 6 2 3 4 5 6 7 2 3 4 1) 6 2) 5 3) 8 4) 9 5) None of these

5 5/6 + [ 2 2/3 - { 3 2/3 - {3 3/4 (3 4/5 -: 9 1/2)} ] is equal to:

What should come next in the following number sequence ? 2 2 3 2 3 4 2 3 4 5 2 3 4 5 6 2 3 4 5 6 1) 2 2) 7 3) 8 4) 3 5) None of these

Which of the following is in ascending order A. 2/3, 3/4, 4/5, 1/2 B. 3/4, 4/5, 1/2, 2/3 C. 1/2, 2/3, 3/4, 4/5 D. 4/5, 1/2, 2/3, 3/4

How many 4's are there in the following series which is immediately followed by 5 but not immediately preceded by 3 ? 5 4 4 3 3 4 5 4 5 5 3 4 4 3 4 5 4 3 3 5 4 5 4 3 5 4 4 3 5 4 1) 0 2) 1 3) 2 4) 3 5) More than three

A company manufactures car batteries of a particular type. The lives (in years) of 40 such batteries were recorded as follows : {:(2.6,3.0,3.7,3.2,2.2,4.1,3.5,4.5,3.5,2.3,3.2),(3.4,3.8,3.2,4.6,3.7,2.5,4.4,3.4,3.3,2.9,3.0),(4.3,2.8,3.5,3.2,3.9,3.2,3.2,3.1,3.7,3.4,4.6),(3.8,3.2,2.6,3.5,4.2,2.9,3.6,,,,):} Construct a grouped frequency distribution table for this data, using class intervals of size 0.5 starting form the intervals 2-2.5

(1)/(1*2*3)+(3)/(2*3*4)+(5)/(3*4*5)+......n