QuestionThe value of 1+3+5+7+9+.+25 is: A 196 B 625 C 225 D 169 Easy Solution Verified by Toppr Correct option is D) We take the first term a=1, last term l=25, common difference d=2 and the number of terms =n. Then, since it is an A.P. series, l=a+(n−1)d n= dl−a+1 = 225−1+1 = 225−1+2 = 225+1 = 226 =13 Let S n be the sum of n=13 terms
Whatis the nth term of the arithmetic sequence 1,3,5,7,9,11? A n+1 B n−1 C 2n+1 D 2n−1 Easy Solution Verified by Toppr Correct option is D) Clearly, the difference of successive terms of above sequence is constant which is 2 So given sequence is in AP with first term 1 and common difference 2 Hence general term is, a n=a+(n−1)d=1+(n−1)2=2n−1
3- 1 = 5 - 3 = 7 - 5 = 9 - 7 = +2 Since every preceding term is 2 more than the previous term. Thus, the required variance of this given data 1, 3, 5, 7, and 9 is +2. Learn more about arithmetic here: #SPJ2
Convert1/9 times 3/5 to Decimal. Here's a little bonus calculation for you to easily work out the decimal format of the fraction we calculated. All you need to do is divide the numerator by the denominator and you can convert any fraction to decimal: 3 45 = 0.0667.
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