IITM Aptitude test

71. Find the next number in the series 1,2,5,10,17,26

72. sqrt(0.16)+cubic root(0.027) equals

73. if a,b>0 and a+b=2 then the max value of ab is

74. p and q are positive integers with their average 5. Find how many different values can p take

75. The hands of clock coincide after every 66 min of correct time. How much does the clock gain or lose in a day.

76. If x to the power of 5=4 and x to the power of 4=5/y , then x equals

77. The members a,b,12 form a geometric progression and the nos a,b,9 form an arithmetic progression. Find the value of a+b

78. If x,y,z are natural numbers, and if 2x=y and y=3z, what number equal to x+y+z

79. In a group of 15,7 can speak spanish, 8 can speak french, and 3 can speak neither. How much of the group can speak both french and spanish

80. Oranges are bought at 11 for Rs. 10 and sold at 10. for Rs. 11 the profit is