2 votes 2 votes the number of common term in two sequences 17,21,25,.....417 and 16,21,.....461 adarsh shivhare asked Jan 2, 2018 adarsh shivhare 406 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Ashwin Kulkarni commented Jan 2, 2018 reply Follow Share 20 terms? Both sequences will meet exactly after 20 difference, first meet at 21, 41, 61.... 401 (20 numbers) 1 votes 1 votes Ajay Jadhav commented Jan 2, 2018 reply Follow Share 20?? 0 votes 0 votes srestha commented Jan 2, 2018 reply Follow Share 21,41,............. 0 votes 0 votes Sukanya Das commented Jan 2, 2018 reply Follow Share LCM (common difference of 1st sequence, common difference of 2nd sequence) = LCM (4,5) = 20 The 1st common term is 21 next will be 41, 61,.... 401 (as the common difference is 20, the last term will be 20n+1, the 1st sequence ends in 417.So, last common term will be less than 417) No. of terms = ${(last term -first term) / common difference}+1$ = (401-21)/20 + 1 = 20 1 votes 1 votes Please log in or register to add a comment.
1 votes 1 votes same qs: https://aptitude.gateoverflow.in/512/cat2008-12?show=512#q512 Sukanya Das answered Jan 2, 2018 Sukanya Das comment Share Follow See all 0 reply Please log in or register to add a comment.