SUM sab jod deta hai, AVERAGE unka middle nikalta hai, COUNT sirf numbers ginata hai, aur COUNTA kuch bhi ho gin lega. COUNT text ko ignore isliye karta hai kyunki uska kaam sirf calculations ke liye numbers ko chunna hai — jaise mere Data Structures ke paper ke marks se sirf numerical grades gin kar hum class ka average nikalte hain, jo actual ranking deta hai. Lekin agar tum meri file dekho, usme 'Absent' ya 'NA' bhi hai... woh COUNTA hi bataayega ki total kitne subjects the, warna COUNT use chhod dega.
#argentina#inflation
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