TCS aptitude questions 1

1)In a well of 20feet depth, a frog jumps 5feet up in the morning and comes 4feet down in the
evening,on which day the frog gets out of the well.
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2)Next number in the series:
77,49,36,18,?
answer 8
(7*7=49)(4*9=36)(3*6=18)   (1*8=8)
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3)A & B are playing a game .There are 8 oranges in a row on the table.one Player can take 1-4
oranges in a pick (a maximum of 4),one who picks the last orange wins the game.'A' plays first
How many oranges should he pick first time inorder to win the game.
answer 3.
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4)9/10 or 10/11 which is greater.
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5) (x-y/3)-(y-x/3)=?
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6)x:y=3  and x+y=80 what is the value of y?
answer y=20
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7)Average of 5 number is -10 sum of 3 numbers is 16,what is the average of other two numbers?
answer -33
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8)16 litre can, 7 litre can,3 litre can,the customer has to be given 11 litres of milk using
all the three cans only explain?
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9)A car has run 10000 miles using 5 tyres interchangably,To have a equal wornout by all tyres
how many miles each tyre should have run.
answer 4000 miles/tyre
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10) 8 to the power of x is 32,what is the value of x?
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11) 12 Blacksox and 12 Whitesox mixed in a box,a pair of sox is picked at a time,in which pick/
how many pick ,to get the right pair(black&black or white&white)?
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12)Two coins one with HEAD IN BOTH SIDES  and the other coin HEAD IN ONE SIDE AND TAIL IN THE
OTHER SIDE  is in a box,a coin is taken at random and FOUND HEAD IN ONE SIDE .what is the
probability that THE OTHER SIDE IS HEAD?
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13)A man shapes 3 cardboards in 50 minutes,how many cardboards does he shape in 5 hours?
answer 18cardboards.
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14)How many 3 digits with 3 Distinct digits are there from 100-1000.
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15)Three men goes to a hotel to stay ,the clerk says $30 per room/day so all the three plans
to stay in one room so each pays $10.After some time the clerk realises that he made a mistake
of collecting $30 but the room cost only $25,there fore he decides to return $5 to them
so he calls the roomboy and gives him $5 asking him to return.The roomboy keeps $2 with him
and he returns only $3($1 for each).
Now Totally all have paid $9 each($27)+rommboy $2 which is equal to $27.where did $1 go,who
has made the mistake?

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