1+2+3+.......14+15+14.......3+2+1=? | CLASS 14 | संख्या पध्यती | MATHS | Doubtnut

1.4+2.5+.......+n(n+3)=

If 1 $ 9 & 5 = 14 and 2 & 4 $ 3 = 14, then 7 $ 9 & 9 = ?

2/5 xx (-3)/7 + 1/(14) xx 2/5

It 1 -2 lf A-14 5|andf(t) =t2-3t +7 then 24 14. If A= 3 61 2 (EAM-2008) 1 1) 2) 3) 4)

The average age of 30 students in a class is 15 years. If 6 students of this class have the average age of 16 years, then the average age of the remaining 24 students would be (a) 14 years (b) 14 years 3 months (c) 14 years 6 months (d) 14 years 9 months

Value of -^(15)C_(1) + 2..^(15)C_(2)- 3.^(15)C_(3) + ...... - 15.^(15)C_(15)+ ^(15)C_(1)+ ^(15)C_(2)+ ....^(15)C_(14) is

Which of the following cannot be valid assignmentof probabilities for outcomes of sample space S={omega_(1),omega_(2),omega_(3),omega_(4),omega_(5),omega_(6),omega_(7)} ? Assignement omega_(1),omega_(2),omega_(3),omega_(4),omega_(5),omega_(6),omega^(7) a. 0.1,0.01,0.05,0.03,0.01,0.3,0.6 b. 1/7,1/7,1/7,1/7,1/7,1/7,1/7 c. 0.1,0.2,0.3,0.4,0.5,0.6,0.7 d. -0.1,0.2,0.3,0.4,-0.2,0.1,0.3 e. 1/14,2/14,3/14,4/14,5/14,6/14,15/14

Given below are the ages of 25 students of class IX in a school. Prepare a discrete frequency distribution. 15, 16, 16, 14, 17, 17, 16, 15, 15, 16, 16, 17, 15, 16, 16, 14, 16, 15, 14, 15, 16, 16, 15, 14, 15