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Practicing real exam questions helps you understand the exam pattern, improve accuracy, and boost your JEE score. Perfect for students aiming for top ranks in IIT-JEE.","tags","jee main joint entrance examination india","version","vip","location",{"_391":392,"_393":394},"type","Point","coordinates",[395,396],79.0888,21.1466,"in","priority",11,"createdOn",1756744302186,"updatedOn","questionsCount",24748,"courseCount",9,"examKey","questionData",{"_369":410,"_411":412,"_413":414,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":426},"9hkHL5JFvTxMxUTX44RGwckbX78Vck","q","Let A and B be two sets containing 2 elements and\n4 elements respectively. The number of subsets of\nA $$ \\times $$ B having 3 or more elements is :","ans",[95],"2013 (Offline)","course","mathematics","exp","A $$ \\times $$ B will have 2 $$ \\times $$ 4 = 8 elements.\n

The number of subsets having atleast 3 elements\n

= ⁸C₃ + ⁸C₄ + ⁸C₅ + ⁸C₆ + ⁸C₇ + ⁸C₈ \n

= 2⁸ – (⁸C₀ + ⁸C₁ + ⁸C₂) = 256 – 1 – 8 – 28 = 219","opts",[422,423,424,425],"219","211","256","220",1,"1","initComment","initReply","actionData","errors"]

JEE MAIN - Mathematics (2013 (Offline) - No. 1)

Explanation

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