Explanation

 Convert speed to meters per second:

60 km/h=  60×1000/60×60

 =16.67 m/s

Use the formula:

Distance=Speed×Time

Length of Train

Length of Train=16.67×9=150 m

Explanation

• A man is standing upside down with his face towards the south.
• Normally, if a person stands upright facing south, their left hand points east and right hand points west.
• When flipped upside down, the directions of their hands do not change relative to their body.

Thus, the left hand will still point east

Explanation

Explanation

The pattern of the series is:

1³ = 1, 2² = 4, 2³ = 8, 3² = 9, 3³ = 27

Following this pattern:

4² = 16 (skipped), 4³ = 64

So, the next number in the series is 64.

Explanation

The pattern follows: +12, +13, +14, +15, +16

74 + 16 = 90

Explanation

x + y = 30 ... (Equation 1)

x - y = 8 ... (Equation 2)

We can solve these equations by adding them together, which eliminates y:

2x = 38

Dividing both sides by 2 gives us:

x = 19

Now that we have x, we can find y by substituting x into Equation 1:

19 + y = 30

Subtracting 19 from both sides gives us:

y = 11

Now that we have both x and y, we can find their product:

Product = x * y

= 19 * 11

= 209

Explanation

729 = 27 × 27

√729 = √(27 × 27)

√729 = 27

Explanation

To compare the ratios, we can convert them to fractions and then decimals:

7:15 = 0.4667

15:23 = 0.6522

21:29 = 0.7241

The largest ratio is 21:29.

Explanation

Let C's age be x years. Then, B's age = 2x years. A's age = (2x + 2) years.

∴ (2x + 2) + 2x + x = 27

⇒ 5x = 25

⇒ x = 5.

Hence, B's age = 2x = 10 years.

Explanation

The correct answer is:

2 is abscissa and 4 is ordinate

In an ordered pair (x, y), x is the abscissa (the value on the x-axis) and y is the ordinate (the value on the y-axis).