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self Math Questions and Answer Page 313

(#M40002716) SELF QUESTION Keep an EYE

"if a/b=6/5;
find
5a+4b+3/5a-4b+15=?"

prachi sharma (14 years ago)

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(#M40002656) SELF QUESTION maths Keep an EYE

if a/b=6/5;
find
5a+4b+3/5a-4b+15=?

prachi jain (14 years ago)

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(#M40002636) SELF QUESTION time/distance Keep an EYE

A boat went on a voyage. After it reach 180 miles a plane starts from that same point with 10 times speed of that ship.. so when it meet that ship from the starting point? a)200 miles b)220 c) 190 d)215

harikrishnan (14 years ago)

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(#M40002616) SELF QUESTION Series, find the missing term Keep an EYE

4, 7, 25, 10, __, 20,16,19....

Shubham (14 years ago)

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(#M40002604) SELF QUESTION numbers Keep an EYE

what four digit number has first digit three less than fourth digit which is one more than second digit which is twice third digit which is not prime number and is one more than 1/3 of fourth digit? ( number written as left to right )

HARSH AGARWAL (14 years ago)

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(#M40002602) SELF QUESTION Keep an EYE

ABC
*DEF
------------
BFAE
DGFEG
ABCGG
------------
CHGFE
given:C+E=8
each no represent distinct values from 0-9.
find the nos

liki mohanty (14 years ago)

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(#M40002601) SELF QUESTION Keep an EYE

Alice and Bob play the following coins-on-a-stack game. 20 coins are stacked one above the other.One of them is a special (gold) coin and the rest are ordinary coins. The goal is to bring the gold coin tothe top by repeatedly moving the topmost coin to another position in the stack.Alice starts and the players take turns. A turn consists of moving the coin on the top to a position i belowthe top coin (0 = i = 20). We will call this an i-move (thus a 0-move implies doing nothing). The provisois that an i-move cannot be repeated; for example once a player makes a 2-move, on subsequent turnsneither player can make a 2-move. If the gold coin happens to be on top when it's a player's turn thenthe player wins the game. Initially, the gold coinis the third coin from the top. Then find the valid game between alice and bob.
a) In order to win, Alice's first move should be a 1-move.
b) In order to win, Alice's first move should be a 0-move.
c) In order to win, Alice's first move can be a 0-move or a 1-move.
d) Alice has no winning strategy.

Solution

(b)In order to win, Alice's first move should be a 1-move....
reason:there are two possibility after 1- move by Alice:-
1. when bob takes 0-move....then the coin config is same ..... but now alice can neither take 1-move nor 0-move.... so she has to take 2 or greater move(let it be 2 move)............
now we have only one coin above the gold coin......now bob can neither take 1-move nor 0-move nor 2-move.... so she has to take 3 or greater move.......
but the move greater then 2-move brings gold coin on top....makes alice win...

2.now bob takes 2-move after alice's first move....... now thre is only one coin above the gold coin..... so Alice takes 0-move........now we have only one coin above the gold coin......now bob can neither take 1-move nor 0-move nor 2-move.... so she has to take 3 or greater move.......
but the move greater then 2-move brings gold coin on top....makes alice win...

This answer is given by ROHIT KUMAR and is the correct answer

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aniruddha mandal (14 years ago)

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(#M40002600) SELF QUESTION Keep an EYE

.A volume of 10936 l water is in a container of sphere. How many hemisphere of volume 4l each will be required to transfer all the water into the small hemispheres?
a)2812 b)8231 c)2734 d)4222

aniruddha mandal (14 years ago)

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(#M40002599) SELF QUESTION Keep an EYE

A number when divided by D leaves a remainder of 8 and when divided by 3D leaves a remainder of 21 . What is the remainder left, when twice the number is divided by 3D?
a) 13 b) cannot be determined c) 3 d) 42

aniruddha mandal (14 years ago)

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(#M40002596) SELF QUESTION number Keep an EYE

use 4 for four times and bring the answer 4.

harikrishnan (14 years ago)

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