# Tech Mahindra Papers: Sample Questions 15 - 17 of 42

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## Question number: 15

MCQ▾

### Question

How many mashes are there in 1 square meter of wire gauge if each mesh is 8mm long and 5mm wide?

### Choices

Choice (4) Response

a.

250

b.

2500

c.

25000

d.

250000

c.

### Explanation

• We know, 1 m = 100 cm
• 1 cm = 10 mm
• So, 1 mm = 100 cm = 1000 mm
• So, 1 =
• Let there be x number of meshes in 1 square meter of wire gauge. Mesh is 8 mm long and 5 mm wide.
• Volume of total number of meshes is equal to volume of wire gauge.

• There are total 25000 meshes in wire gauge.

## Question number: 16

MCQ▾

### Question

If a boat is moving in upstream with velocity of 14 km/hr and goes downstream with a velocity of 40 km/hr, then what is the speed of the stream?

### Choices

Choice (4) Response

a.

34 km/hr

b.

26 km/hr

c.

13 km/hr

d.

None of the above

c.

### Explanation

• Boat is moving in upstream with velocity of 14 km/hr, i. e. b = 14 km/hr
• Boat is moving in downstream with velocity of 40 km/hr, i. e. a = 40 km/hr
• Here, we have to find the speed of stream.
• Let the speed of stream be v km/hr.
• Speed of stream,

• Speed of stream is 13 km/hr.

## Question number: 17

### Write in Short

What will be the next term of the series?

23,48,84,133, —-

### Explanation

• First term of the series is 23 and second term of the series is 48.
• Difference between first and second term is 25, which is square of 5.
• Third term of the series is 84.
• Difference between second and third term of the series is 36, which is square of 6.
• Fourth term of the series is 133.
• Difference between third and fourth term of the series is 49, which is square of 7.
• Following the same pattern, difference between fourth and fifth term of the series should be square of 8, i. e. 64
• Therefore,
• Fifth term of the given series should be 197.