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It assesses knowledge in subjects relevant to the candidate’s chosen course of study.","tags","utme jamb joint admission matriculation board unified tertiary matriculation examination nigeria africa","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",5,"createdOn",1755987353430,"updatedOn","questionsCount",29915,"courseCount",20,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":426},"CjqrlrAyGpDTYVlMJEOb6eJ8dDjE83","q","The 4th term of an A.P. is 13 while the 10th term is 31. Find the 21st term.","ans",[414],2,"1995","course","mathematics","exp","a + 3d = 13
\n
\na + 9d = 31
\n
\n6d = 18
\n
\n= d = 3
\n
\na = 13 - 9
\n
\n= 4
\n
\na + 20d = 4 + (20 x 3)
\n
\n = 64","opts",[422,423,424,425],"175","85","64","45",16,"16","initComment","initReply","actionData","errors"]

JAMB - Mathematics (1995 - No. 16)

Explanation

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