RRB Government Jobs Exams

43) There are 4 boxes coloured red, yellow, green and blue. If 2 boxes are selected, how many combinations are there for atleast 1 green box or one red box to be selected?
a) 1
b) 6
c) 9
d) 5

Read Solution (Total 2)

GR,GY,GB OR RY,RG,RB are possible but taking only 1GR combination there are totally 5 possible combinations
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1..blue and yellow green
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RRB Other Question

37) If m is an odd integer and n is an even integer, which of the following is definitely odd?
a) (2m+n)(m-n)
b) (m + n2 )( m - n2)
c) m2 + mn + n2
d) m+n
44) All faces of a cube with an 8 meter edge are painted red. If the cube is cut into smaller cubes with a 2 meter edge, how many of the 2 meter cubes have paint on exactly 1 face?
a) 24
b) 36
c) 60
d) 48