Read the instructions first and then answer.
Answers
Step-by-step explanation:
Exercise-3:-
a)CA,GA,TG,TC,,AT
b)CAG and TAS
c)AT and CG
d)Point of intersection is A
2)See the above attachment
A plane contains at least three non-collinear points. If two points lie in a plane, then the line containing them lies in the plane.
SA:-
1)
Given two planes intersect in a line. For the third plane not to intersect that line at a point, it must be parallel to the line. ... That is what the three planes produce.Parallel planes are planes that do not intersect.
2) The three planes are Intersecting at a line. Each Plane Cuts the Other Two in a Line. Three Planes Intersecting in a Line. They form a cluster of planes.
3) Given three planes form a prism,when the three planes intersect in a single point.
4)If two planes are not intersecting but third plane intersecting them then the point of intersection of lines are parallel.
5)If two planes are Intersecting to each other then the intersection is a line.
Answer:
Required Answer:-
Firstly,
Let's understand the relation between the number of men and number of days for doing a piece of work.
If there were less number of men, more days will be required to complete the work.
They are indirectly proportional to each other. It means, if number of men = x, number of days = m. Then x1.m1 = x2.m2
Now, Let's come to the question.
X men take 30 days to complete a work.
1 men will takes 30 × X days to complete then. (From the above relation).
And,
If there were 6 more men, then number of men now is X + 6. No. of days is 30 - 10 = 20 days.
X + 6 men take 20 days to complete.
1 men will take (X + 6)20 days then..
That means,
⇒ 30X = (X + 6)20
⇒ 30X = 20X + 120
⇒ 10X = 120
⇒ X = 12 men
Initially,
The no. of men were X i.e. 12 (Option C)