MCQ on Riemann integral Part 1:- 1. If P is common refinement of P₁ and P₂ then (1 point) ◯ P₁ ∪P₂⊂P ◯ P₁ ∪P₂⊂P and P⊂P₁∪P₂ ◯ P₁ ∪P₂⊂P or P⊂P₁∪P₂ ◯ P⊂P₁∪P₂ 2. If P is refinement of P1 and P2 ,then P is the common refinement of P₁ and P₂ (1 point) ◯ True ◯ False 3. Let f be real and bounded on [ a,b] α monotonically increasing on [a, b] and P ={x₁,x₂,...xₙ} be partition of [a b] .then U(P,f,α)=________ (1 point) ◯ ∑ᵢⁿ₌₁ Mᵢ∆αᵢ ◯ ∑ᵢⁿ₌₁ mᵢ∆αᵢ ◯ Mᵢ∆αᵢ ◯ mᵢ∆αᵢ 4. __________ is refinement of the partition P= {1,3,5,7,10} of [1,10]. (1 point) ◯ P₁={1,2,3,4,.....,10} ◯ P₂={1,3,10} ◯ P₃={1,3,5,7,9} ◯ P₄=∅ 5. If P* is refinement of P then...