Negative Numbers and Integers — MATHS STD 6 — Question

Write the sets whose elements are:
2, 4, 8, 16, 64 and 128

Simplify:
a − (a − b − c)

State whether or not the following elements form a set; if not, give reason:
All clever boys of class 6

Find the difference : 70 - (-8)

Write of the following decimal in figure : Zero point seven nine three.

Under what condition will two straight lines, in the same plane, have no point in common.
If possible draw a diagram in support of your answer.

Express the following as an algebraic expression:
Sum of p and 2r – s minus sum of a and 3n + 4x.

Name three objects from your surroundings that contain perpendicular edges.

Round off 4327 to the nearest thousand.