← Back to Quizzes Hints: 2/2 Brain Teaser Set – 4 Easy Start Your name (optional): Share Certificate Browse Quizzes Play Again [{"type":"single","prompt":"Complete the series: 1, 4, 9, 16, ?","options":["20","24","25","36"],"answer":[2],"explanation":"Perfect squares \u2192 1\u00b2, 2\u00b2, 3\u00b2, 4\u00b2, next 5\u00b2 = 25.","hint":"Square numbers."},{"type":"single","prompt":"Which is different?","options":["Lion","Tiger","Leopard","Whale"],"answer":[3],"explanation":"Whale is an aquatic mammal; others are big cats.","hint":"Habitat\/type difference."},{"type":"single","prompt":"Find the next number: 2, 5, 9, 14, 20, ?","options":["25","26","27","28"],"answer":[2],"explanation":"Differences +3, +4, +5, +6 \u2192 next +7 = 27.","hint":"Increasing differences."},{"type":"single","prompt":"Statement: Some artists are singers. All singers are dancers.","options":["Only 1 follows","Only 2 follows","Both follow","Neither"],"answer":[0],"explanation":"Artists \u2229 Singers \u2286 Dancers \u21d2 1 true; 2 not implied.","hint":"Chain relation."},{"type":"single","prompt":"Arrange in dictionary order:","options":["i, ii, iii, iv","i, iii, ii, iv","i, ii, iv, iii","i, iv, ii, iii"],"answer":[0],"explanation":"\u201cCat\u201d < \u201cCatch\u201d < \u201cCategory\u201d < \u201cCattle\u201d.","hint":"Compare letter by letter."},{"type":"single","prompt":"If * means + and + means \u00d7, find: 3 * 4 + 2","options":["9","10","11","14"],"answer":[2],"explanation":"Replace \u2192 3+4\u00d72 = 3 + 8 = 11 (BODMAS).","hint":"Replace signs, then order of ops."},{"type":"single","prompt":"At 6:00, what is the angle between the clock hands?","options":["90\u00b0","120\u00b0","150\u00b0","180\u00b0"],"answer":[3],"explanation":"Hour at 6, minute at 12 \u2192 straight line = 180\u00b0.","hint":"Each hour = 30\u00b0."},{"type":"single","prompt":"A bag has 3 red and 2 blue balls. Probability of red?","options":["1\/5","2\/5","3\/5","4\/5"],"answer":[2],"explanation":"Total 5; red 3 \u2192 3\/5.","hint":"Favorable\/Total."},{"type":"single","prompt":"A person saves $100 in Jan, $120 in Feb, $140 in Mar. What about Apr?","options":["$150","$160","$170","$180"],"answer":[1],"explanation":"+$20 each month \u2192 140 + 20 = 160.","hint":"Constant difference."},{"type":"single","prompt":"Cost price = $80, selling price = $100. Profit %?","options":["20%","22.5%","25%","30%"],"answer":[2],"explanation":"(100\u221280)\/80 \u00d7 100 = 25%.","hint":"Profit% = profit\/CP \u00d7 100."}]
