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During a 7-day photography expedition in Tanzania, your team captures 120 images of elephants, 85 images of lions, and 45 images of rhinoceroses. Due to a technical error, you lose 15% of the total images. How many total images remain after the loss?
First, calculate the total images: 120 + 85 + 45 = <<120+85+45=250>>250 images
Bioinformatician Analyzing Genetic Sequences:
A genomic dataset contains 1.2 million DNA sequences. An algorithm filters out 38% of low-quality sequences, then removes another 12% of the remaining sequences as redundant. How many sequences are left after both filters?
You plan a 10-day trek to photograph giraffes, spending 60% of the days in the Serengeti, 20% in Maasai Mara, and the remaining days in Ngorongoro. Due to weather, you only complete 75% of the planned Serengeti days. How many actual Serengeti days did you photograph?
A genome has 3.2 billion base pairs. A sequencing error introduces an average mutation in 0.007% of bases. How many errors are expected in the full genome?
Convert percentage: 0.007% = 0.00007
A dataset has 450,000 gene expressions. A normalization algorithm reduces variance in 28% of genes, and a subsequent quality flag removes 15% of the remaining genes as non-expressing. How many genes pass all filters?
A machine learning model predicts gene functions with 94% accuracy on 2.5 million annotations. How many predictions are incorrect?
Over 12 days, you photograph 52 lion prides. Each pride has a median of 14 members, but 12.5% of prides are temporarily dispersed and not photographed. On average, each photographed pride contributes 11 usable images. How many usable images are collected?