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Free webinar on Robotics (Block Chain) Learn to create a Robotic Device Using Arduino
30th Jan @ 5:00PM for Grade 1 to 10
EVERYBODY IN A A ROOM SHAKES HANDS WITH EVERY BODY ELSE.THE TOTAL NUMBER OF HANDSHAKES IS 66.THE TOTAL NUMBER OF PERSONS IN THE ROOM IS? a)11 b)12 c)13 d)14 EVERYBODY IN A A ROOM SHAKES HANDS WITH EVERY BODY ELSE.THE TOTAL NUMBER OF HANDSHAKES IS 66.THE TOTAL NUMBER OF PERSONS IN THE ROOM IS?a)11 b)12 c)13 d)14
total no of handshakes = nC2 = 66n (n-1) /2 = 66ior n(n-1) = 66*2 = 11*12No. of people = 12ThanksBharat BajajIIT Delhiaskiitians faculty
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