Let `A={varphi,{varphi},1,{1,varphi},2}dot` Which of the following are true? i.`{1}sub A` ii. `{{varphi}}subA` iii. `{2,varphi}subA`

Let A={varphi,{varphi},1,{1,varphi},2}dot Which of the following are true? i. varphi ∈A ii. 2subA iii. {2,{1}}subA

Let A={varphi{varphi},1,{1,varphi},2}dot Which of the following are true? (i) {{2},{1}} A (ii) {varphi,{varphi}, {1,varphi}}subA

Let A={phi,{phi},2,{2,phi},3}, which of the following are true ? {:((i),phiinA,(i),phisubA,(iii),{phi}inA),((iv),{phi}subA,(v),2subA,(vi),{2","phi}subA),((vii),{{2}","{3}} subA,(viii),{2","3}!inA, (ix),{phi","2","3}subA.):}

Let A={{1,2,3},\ {4,5},\ {6,7,8}}dot Determine which of the following is true or false: (i) {{4,5}}subA (ii) varphi in A (iii) varphisubA

Write down all the subsets of the following sets (i) {a} (ii) {a , b} (iii) {1, 2, 3} (iv) varphi

Let A= {1, 2, {3, 4}, 5} . Which of the following statements are incorrect and why?(i) {3, 4}sub A (ii) {3, 4} in A (iii) {{3, 4}} subA (iv) 1 in A (v) 1 subA (vi) {1, 2, 5} ⊂ A (vii) {1, 2, 5} ∈ A (viii) {1, 2, 3} ⊂ A (ix) φ ∈ A (x) φ ⊂ A (xi) {φ} ⊂ A

Let A ={1,2,{3,4},5} . Which of the following statements are incorrect and why ? (i) {3,4} subA (ii) {3,4} in A (iii) {{3,4}}sub A (iv) 1 in A (v) 1 sub A (vi) {1,2,5} sub A (vii) {1,2,5} in A (viii) {1,2,3} sub A (ix) phi in A (x) phi sub A (xi) {phi} sub A .

Let A={a , b ,{c , d},\ e} . Which of the following statements are false and why? (i) {a , b , e} in A (ii) {a , b , c}subA (iii) varphi in A (iv) {varphi}subA

Let A={{1,2,3},\ {4,5},\ {6,7,8}}dot Determine which of the following is true or false: (i) 1 in A (ii) {1,2,3}subA (iii) {6,7,8} in A

Let A={a , b ,{c , d},\ e} . Which of the following statements are false and why? (i) {c , d}subA (ii) {c , d} in A (iii) {{c , d}}subA