Explanation

Let's directly evaluate the system of equations:

1x + 3y = 1

3x + λy = 3

For infinitely many solutions, these equations must represent the same line. Multiplying the first equation by 3 gives:

3x + 9y = 3

Comparing this with the second equation 3x + λy = 3, we see that λ must equal 9 for the equations to be identical.

Explanation

In accounting, transactions are recorded in the journal on the same day they occur.

This ensures accuracy and timely financial tracking.

Explanation

An oligopoly is a market with few large firms dominating the industry.

These firms often influence prices and market decisions due to limited competition.

A Monopoly exists when there is only one seller in the market.

The product offered has no close substitutes, giving the seller full pricing power.

Explanation

The first ruler of the Kalhora dynasty in Sindh was Mian Yar Muhammad Kalhoro. 

Mian Yar Muhammad Kalhoro was granted the title of Khuda Yar Khan by the Mughals.

He was established their rule in Sindh around the beginning of the 18th century.

The last ruler of the Kalhora dynasty in Sindh was Mian Abdul Nabi Kalhoro.

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