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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},"tySoZDhvbBSrDyHBMNhx2F6TTcUb1K","q","Four interior angles of a pentagon are 90^o - x^o, 90^o + x^o, 110^o - 2x^o, 110^o + 2x^o. Find the fifth interior angle","ans",[414],3,"1988","course","mathematics","exp","Let the fifth interior angle be y: sum of interior angle of a pentagon
\n
\n= (2 x 5 - 4) x 90^o
\n
\n= 6 x 90^o
\n
\n= 540^o
\n
\n(90 - x) + (90 + x) + (110 - 2x) + (110 + 2x) + y = 540^o
\n
\n400^o + y = 540^o
\n
\ny = 540 - 400^o
\n
\ny = 140^o","opts",[422,423,424,425],"110^o","120^o","130^o","140^o",18,"18","initComment","initReply","actionData","errors"]

JAMB - Mathematics (1988 - No. 18)

Explanation

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