Explanation

To find the square root:

√2.56 = √(256/100)

= √(16^2 / 10^2)

= 16/10

= 1.6

Explanation

The reciprocal of a number x is 1/x.

0 has no reciprocal because 1/0 is undefined.

Explanation

1 Kg is equal to 1000 grams.

1 Kg is equal to 2.2 pounds.

Explanation

The greatest 3-digit number is 999, and the smallest 3-digit number is 100.

Their product: 999 × 100 = 99900.

Explanation

A 6-digit number starts from 100,000, which is the smallest possible number with six digits.

Any number less than this has fewer than six digits.

Explanation

The correct definition of rational numbers is:

The set of all numbers of the form p/q where p and q are integers and q ≠ 0.

This is because rational numbers are defined as the ratio of two integers, with the denominator (q) being non-zero.

Explanation

A function f: A → B is called onto (surjective) if Range(f) = B, meaning every element in B has at least one preimage in A.

In other words, for every b ∈ B, there exists a ∈ A such that f(a) = b.

Explanation

In mathematics, the empty set is the unique set having no elements; its size or cardinality is zero.

Some axiomatic set theories ensure that the empty set exists by including an axiom of empty set, while in other theories, its existence can be deduced.

Explanation

SOLUTION:

1/10+2/5-1/20

5/10-1/20

9/20

SH5-9-2023

Explanation