Which term of an AP 20,19[1/4],18[1/2], 17[3/4],... is the first negative term?

Which term of the sequence 20,19 1/4, 18 1/2, 17 3/4,... is the first negative term?

Which term of the AP 30, 29""1/4, 28""1/2,27""3/4 …., is the first negative term ?

Which term of the sequence : 20,19 1/4, 18 1/2, 17 3/4 , ..... is the first negative term ?

Which term of the sequence 20 ,19 1/4, 18 1/2, 17 3/4,dot is the first negative term?

Which term of the sequence 20 ,19 1/4, 18 1/2, 17 3/4,dot is the first negative term?

Which term of the sequence 20 ,19 1/4, 18 1/2, 17 3/4,dot is the first negative term?

Which term of the sequence 20 ,19 1/4, 18 1/2, 17 3/4,dot is the first negative term?

Which term of the sequence 20,19(1)/(4),18(1)/(2),17(3)/(4),... is the first negative term?

(i)Which term of the A.P. 4, 3(5)/(7), 3(3)/(7), ..... is the first negative term? (ii) Which term of the progression 20, 19(1)/(2), 18(1)/(2), 17(3)/(4),.... is the first negative term?

Which term of the sequence 20,19(1)/(4),18(1)/(2),17(3)/(4), is the first negative term?