self Maths Puzzle

In a bag containing only blue, red and green marbles, all but 15 are blue, all but
13 are red and all but 12 are green. How many are red?
1. 13
2. 7
3. 25
4. 20

Read Solution (Total 1)

Ans:7
All but blue means number of marbles except blue..hence, let x be the red marble,y
be the green marble,z be the blue marble...
x+y=15
y+z=13
x+z=12
solving this eqns, we get x=7 y=8 z=5 hence number of red marbles are 7
10 years agoHelpfull: Yes(13) No(2)

self Other Question

There are k baskets and n balls. The balls are put into the baskets randomly. If k A. Michael Hofman, a poet and translator, accepts this sorry fact without approval or complaint.
B. But thanklessness and impossibility do not daunt him.
C. He acknowledges too "in fact he returns to the point often " that best translators of poetry always fail at some level.
D. Hofman feels passionately about his work, and this is clear from his writings.
E. In terms of the gap between worth and rewards, translators come somewhere near nurses and street-cleaners.
option
1. EACDB
2. ADEBC
3. EACBD
4. DCEAB