# The maximum length of a pencil that can be kept in a rectangular box ofdimensions 8cm x 6cm x2 cm is

1.  2 √l3 cm

2.  2√14 cm

3.  2√26 cm

4.  10 √2 cm

4
Correct Answer :

2√26 cm

Explanation :
No Explanation available for this question

# A person can row 7 km an hour in still water. He finds that it takes twice the time to row up- ^ stream than the time to row downstream. The speed of the stream is

1.   2km/hour

2.  2.5km/hour

3.  3 km/hour

4.  4 km/hour

4
Correct Answer :

2.5km/hour

Explanation :
No Explanation available for this question

# A man can row 15km/ hr downstream and 9 kmhr upstream. The speed of the boat in still water is

1.  8 km/hr.

2.  10 km/hr.

3.  15 km/hr.

4.  12 km/ hr.

4
Correct Answer :

12 km/ hr.

Explanation :
No Explanation available for this question

# If sin = 2ab/ a2+b2 then the value of tan 0 is equal to

1.  A2-b2/ 2ab

2.  2ab/ a2-b2

3.  A2-b2/a2+b2

4.  A2+b2/a2-b2

4
Correct Answer :

2ab/ a2-b2

Explanation :
No Explanation available for this question

# Two boats A and B start towards each other from two places, 108 km apart. Speeds of the boats A and B in still water are 12km/hr and 15km/hr respectively. If A proceeds down and B up the stream, they will meet after.

1.  4.5 hours

2.  4 hours

3.  5.4 hours

4.  6 hours

4
Correct Answer :

4 hours

Explanation :
No Explanation available for this question

# A steamer goes downstream from one port to another in 4 hours. It covers the same distance upstream in 5 hours. If the speed of stream is 2 km/hr, the distance between the two ports is

1.  50 km

2.  60 km

3.  70 km

4.  80 km

4
Correct Answer :

80 km

Explanation :
No Explanation available for this question

# The speed of a motor-boat is that of the current of water as 36 : 5. The boat goes along with the current in 5 hours 10 minutes. It will come back in

1.  5 hours 50 minutes

2.  6 hours

3.  6 hours 50 minutes

4.  12 hours 10 minutes

4
Correct Answer :

6 hours 50 minutes

Explanation :
No Explanation available for this question

# A steamer goes downstream from one port to an-other in 4 hours. It covers the same distance up¬stream in 5 hours. If the speed of stream is 2 km/ hr, the distance between the two ports is

1.  50 km

2.  60 km

3.  70 km

4.  80 km

4
Correct Answer :

80 km

Explanation :
No Explanation available for this question

# The area of the shaded region in the figure given below is

1.  A2/2[/2-1] sq. units

2.  A2 [?-1] sq. units

3.  A2 [?/2-1] sq. units

4.  A2/2 [?-1] sq. units

4
Correct Answer :

A2 [?/2-1] sq. units

Explanation :
No Explanation available for this question

# Speed of motorboat in still water is 45kmph. If the motorboat travels 80 km along the stream in 1 hour 20 minutes, then the time taken by it to cover the same distance against the stream will be

1.  3 hours

2.  1 hour 20 minutes

3.  2 hours 40 minutes

4.   2 hours 55 minutes

4
Correct Answer :

2 hours 40 minutes

Explanation :
No Explanation available for this question

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