Subject
Quantitative Aptitude
Topic
Number
Find the sum to 200 terms of the series 2 + 5 + 7 + 6 + 12 + 7 + ....
Find the sum to 200 terms of the series 2 + 5 + 7 + 6 + 12 + 7 + ....
ক)
30,400খ)
30,200গ)
34,600ঘ)
38,400Explanation
we can treat every two consecutive terms as one. So, we will have a total of 100 terms of the nature: (2 + 5) + (7 + 6) + (12 + 7).... => 7, 13, 19,.... We know the sum of n terms Now, a= 7, d=6 and n=100 Hence the sum of the given series is S= 100/2 x[2 x 7 + 99 x 6] => 50[608] => 30,400.Related questions
On dividing 2272 as well as 875 by 3-digit number N, we get the same remainder. The sum of the digits of N is:Three times the first of three consecutive odd integers is 3 more than twice the third. The third integer is:A number is as much greater than 36 as the less than Find the number.If one-third of one-fourth of a number is 15, then three-tenth of that number is:If the number 5 * 2 is divisible by 6, then * =?কাজের দিন ২ টাকা পাওনা এবং অনুপস্থিতির দিন ৫০ পয়সা জরিমানা এই শর্তে সেপ্টেম্বর মাসে ৪০ টাকা পেল। সে কত দিন কাজে উপস্থিত ছিল?476 ** 0 is divisible by both 3 and The non-zero digits in the hundred's and ten's places are respectively:The sum of two numbers is 25 and their difference is Find their product.